Question 80
A bag has Rs 43 in the form of 5-rupee, 50-paise and 10-paise coins in the ratio of 1:5:11. What is the total number of 50-paise coins?
Solution
Let 5/- coins = x
50paise coins = 5x
10paise coins = 11x
toal amount = 43
(x)(5)+(5x)(0.5)+(11x)(0.1) = 43
8.6x = 43
x = 5
No.of 50paise coins = 5x = 5(5) = 25
so the answer is option B.
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