Renu spends 3/7 of her pocket money on purchasing new math book and is left with RS 220. Find the cost of math book.
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Answered by
11
since 220 is 4/7 of pocket money
hence 1/7 is 220/4=55
hence math book is 3/7
55×3=165
hence math book is 165 rupees
Answered by
2
Answer:
4/7=220
x=385
cost of maths book=3/7=165 ..
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