SSC CHSL 5 Aug 2021 Shift 3 Paper

Section: Quantitative Aptitude

Question : 62 of 100

Marks: +1, -0

A bag contains coins of denomination

₹ 1

₹ 2

and

₹ 5

in the ratio of

4: 5: 8

. If the total value of these coins is ₹ 432 , then what is the number of

₹ 2

coins?

Solution:

Let the number of coins of

₹ 1

, ₹ 2 and

₹ 5

4 x, 5 x

and

8 x

respectively.
According to the question,

4 x × 1+5 x × 2+8 x × 5 \;\; =432

⇒\;4 x+10 x+40 x \;\; =432

⇒\;54 x \;\; =432

⇒\;x \;\; =\;{432}/{54}=8

∴ \;\text " Number of "\; ₹ 2 \;\text " coins "\; \;\; =5 x=5 × 8

\;\; =40

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