# If 86 bottles of water cost £47.98 how much do 21 bottles cost?

If 86 bottles of water cost £47.98 how much do 21 bottles cost?

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You need to work out what each bottle costs, and then multiply this by the number of bottles.

16 August 2011

So 47.98/86= £0.558 (to 3 decimal places) per bottle

16 August 2011

£0.558 x 21= £11.72 (to 2 dp's).

16 August 2011

This assumes that there are no extra price discounts for purchasing 86 bottles instead of 21.

16 August 2011

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