Question

A bag contains 5p,10p,20p coins in the ratio nof 1:2:4 respectively. If the total money in the bag is rs 8. Find the number of 10p coins in the bag.

Answer 1

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here it is given...
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total money is 8= 800p
let x is included in ratio..
total money of 5p is x×5=5x
and total money of 10p is 2x×10=20x
and total money of 20p is 4x× 20 =80x
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so......
now according to the question
total money =5x+20x+80x
800p =105x
so..
x = 160/21
hence value of x is
160/21
no. of 10p coins = 320/21
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