All questions on Maths

Percentage Increase

Can someone please take a look at the math problem, ( http://www.truitc.com/mathq.jpg ) and explain how to arrive at the answer please. Im really struggling.

Emma

Answers

Hi, The thing with that question is that really there's almost too much information so it's not surprising that you might struggle to extract what's needed. Perhaps there were more questions asked on the same pie charts? Anyway, the answer's £8,000 which can be shown as follows: Taxation this year is £20,000. This is 25% larger than last year's bill. What this means is that tax this year was 1.25 times the tax bill from last year, because "25% larger" means "the original amount plus 25%". The original amount is always 100%, so tax this year was 125%, or 125/100, or 1.25 times last year's bill. So, last year's tax bill was £20,000/1.25 = £16,000. Finally we note that last year tax was 25% of the total losses, and expenses accounted for 12.5%, then that means that expenses counted for half the amount taxes did. Therefore the expenses bill for last year came to £8,000. Hope this helps.

jim360

15 August 2012

Add an answer

coast cost £24 reduced by25% gets further 10% off what is the price

Emma

Convert 68 out of 90 into a percentage

Emma

Dave earns a salary of £3000 per month. He gets a pay rise of 6%. Work out his new monthly salary

please show as much working as you can and NO CALCULATOR PLEASE, :)

Emma

find the mutual funds percentage.

an investor invested a total of $\text{[math]}$ 72, how much was invested in each mutual fund?

Emma

How do you work out percentages of amounts?

Do you know how to work out any given percentage of a number or amount of money

Emma

How do you work out what the original value was if you only know the final figure and a percentage?

For example: working out the original pre vat value when you only know the percentage and final figure?

Emma

percent

MR GOH AND MR HO EACH HAVE SOME APPLES.IF MR GOH SELLS 60APPLES PER DAY AND MR HO SELLS 30APPLES PER DAY.MR GOH WIILL HAVE 400 APPLES LEFT WHEN MR HO HAS SOLD ALL HIS APPLES,IF MR GOH SELLS 30 APPLES PER DAY AND MR HO SELL 60 APPLES PER DAY,MR GOH WILL HAVE 700，HOW MANY APPLES DOES MR GOH HAS?

Emma

percent of increase

the cost of a hamburger goes from 2.00 to 2.25 determine the percent of increase

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Percentage discount and commision

Find the selling price of typewriter which cost Rs 4000 and the mark up is 8%

Emma

percentage grid

how do you work out missing values have a grid with 1to 10 down the left side & diffrent percentage at the top also in the gri space out eg 60kg ,28cl, £5.40 ect dont what to do help

Emma

percentage grid

how do you work out missing values have a grid with 1to 10 down the left side & diffrent percentage at the top also in the gri space out eg 60kg ,28cl, £5.40 ect dont what to do help

Emma

percentages

I'm struggling with how I work out 21% of 52. I was never any good at percentages.

Emma

percentages

what are the three situations in which you have to use percentages?

Emma

Percentages

i understand how to take 5% 10%, 20%,30% of a number but im really confused by percentages like 28% and 4.3 %

Emma

Percentages problems

Need help of 15% of 8200km Need help with 65% of 240 Need help with 45% of 180

Need help

Emma

Percents

In a batch of eggs, 3% were broken. There were 18 broken eggs. How many eggs were there in the batch?

Emma

Powers & Percentage Increase/Decrease

Hi, I'm revising for my gcse exam in June and struggling with these two topics.

Percentage Decrease: What is the new cost after a price of £56 is decreased by 15%? Work it out as 0.85 5g=£47.50 This is a question from a GCSE revision guide, I don't really get this. I have tried to find a way to understand but I really don't- I don't understand where the 0.85 came from. Multiplying powers- again this is a question from a rev guide- 48=32, but 48=2₂ 2₃=2₅ =32 I don't understand how 2 to the power of 3 is 8,

Percentage Decrease: Question from GCSE - 243 / 9 =7, but 243 / 9 = 3₅ / 3₂ = 3₃= 27

Can you please explain all these questions to me, sorry that I'm asking to many questions but please can you answer them, this is the only thing I'm struggling on. Thank You :D

Emma

what are the working outs of 5% 21

Emma

what is 5% of 360?

Emma

what is 73% of 50,18,150 and 90 ?

please help !!

Emma

What is 78% of 650,000

Emma

What's 30% of 250?

Emma

work out 70% of £986

Emma

you purchase this house for 475,000. the realtor earns 5% of this purchase:

: how much is the commission

Emma

How to Find 1 Percent of a Number

Introduction

Have you ever seen a 5% discount in a shop or needed to calculate a 15% tip? All percentage calculations, no matter how complex, are built on one simple, core skill: finding 1 percent.

The word "percent" literally means "per hundred." So, 1% is simply one part out of one hundred.

Once you know how to find 1% of a number, you can easily find any other percentage.

To find 5%, you just find 1% and multiply it by 5.
To find 20%, you find 1% and multiply it by 20.
To find 72%, you find 1% and multiply it by 72.

This guide will show you the one simple trick to find 1% of any number instantly.

The Key Method: Finding 1%

Because 1% means "one out of one hundred" (£1/100£), finding 1% of a number is the same as dividing that number by 100.

The fastest way to divide any number by 100 is to move the decimal point two places to the left.

That's the entire trick.

Worked Example 1: A simple number

Find 1% of 300.

The number is 300. The decimal point is at the end: 300.
Move the decimal two places to the left: 3.00
Answer: 1% of 300 is 3.

Worked Example 2: A number with no zeros

Find 1% of 189.

The number is 189. The decimal point is at the end: 189.
Move the decimal two places to the left: 1.89
Answer: 1% of 189 is 1.89.

Worked Example 3: A number that already has a decimal

Find 1% of 84.5.

The number is 84.5.
Move the decimal two places to the left: 0.845
Answer: 1% of 84.5 is 0.845.

Worked Example 4: A very small decimal number

Find 1% of 0.7.

The number is 0.7.
Move the decimal two places to the left. We need to add zeros for the empty spaces: 0.007
Answer: 1% of 0.7 is 0.007.

Practice Questions & Solutions

Score:

Find 1% of 500.

Solution

To find 1% of 500, we move the decimal point two places to the left.

500. becomes 5.00

Answer: 5

Find 1% of 900.

Solution

To find 1% of 900, we move the decimal point two places to the left.

900. becomes 9.00

Answer: 9

Find 1% of 250.

Solution

o find 1% of 250, we move the decimal point two places to the left.

250. becomes 2.50

Answer: 2.5

Find 1% of 476.

Solution

To find 1% of 476, we move the decimal point two places to the left.

476. becomes 4.76

Answer: 4.76

Find 1% of 81.

Solution

To find 1% of 81, we move the decimal point two places to the left.

81. becomes 0.81

Answer: 0.81

A t-shirt costs £40. How much is 1% of its price?

Solution

To find 1% of £40, we move the decimal point two places to the left.

40. becomes 0.40

Answer: £0.40 (or 40p)

Find 1% of 15,200.

Solution

To find 1% of 15,200, we move the decimal point two places to the left.

15200. becomes 152.00

Answer: 152

Find 1% of 70.5.

Solution

To find 1% of 70.5, we move the decimal point two places to the left.

70.5 becomes 0.705

Answer: 0.705

Find 1% of 1.25.

Solution

To find 1% of 1.25, we move the decimal point two places to the left.

1.25 becomes 0.0125

Answer: 0.0125

A bank offers a 1% annual interest rate. If you deposit £5.50, how much interest would you earn in a year?

Solution

We need to find 1% of 5.50. We move the decimal point two places to the left.

5.50 becomes 0.0550

Answer: £0.055

Gianpiero Placidi