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help me please with my ds maths homework

(6 Posts)
2sprogsmum Sat 24-Feb-07 13:05:13

He had to write a maths problem involving %.

He has written:
Luke went into JJB's to buy a Villa Kit for £30. 30 mins later, Matthew went in and got the same kit for 34% less than Luke. How much did Matthew's kit cost?

How do we work out the answer? What is the formula?

I would be so grateful for some help, I could never do percentages at school.

MamazonAKAfatty Sat 24-Feb-07 13:07:04

30 divided by 100 x 34 = the discount??

errrm, im really pants at math

nerdgirl Sat 24-Feb-07 13:07:10

Work out 34% of £30 i.e. 30 * 34/100

Then take the answer away from the £30

NAB3 Sat 24-Feb-07 13:07:29

1% of £30 is 30p. times by 34= £10.20 That gives you the 34% and take that from the £30 which is £19.80

2sprogsmum Sat 24-Feb-07 13:28:31

wow thank you soo much oh brainy ones!

LIZS Sat 24-Feb-07 13:53:48

Matthew's cost as % of Luke's price is
100 - 34 = 66 %
so actual cost is
66/100 x £30
= £ 19.80

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