Question

10 pens cost £2.50 find the cost of 7 pens

Answer 1

cost of 10 pens = £2.50
cost of 1 pen = £2.50/10 = £ 0.25
so cost of seven pen = £0.25×7 = £1.75

Answer 2

10 pens=2.50 pounds
7 pens=?
pens _ pounds
10____2.50
7_____? (cross multiplication)
=>7×2.50/10
=>17.5÷10
=>1.75 pounds
in rupees
=>1 pound =88.89rs
=>1.75pound=1.75×88.89
=>155.55 Rs

hope it helps u
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