Simplification Test 3

Question : 40 of 40

Marks: +1, -0

A total of 324 coins of 20 paise and 25 paise make a sum of Rs. 71. What is the number of 25 paise coins?

Solution:

Let number of 25 paise coins be x.
Now,

x×1/4+(324-x)×1/5=71

⇒x/4-x/5=71-324/5

⇒x/20=31/5

∴x=124

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