Question

The ratio of the number of 5 coins and 10 coins is 8:15. If the value of * 5 coins is 360, then the number of 10 coins will be:

(a) 72
(b) 120
(C) 135
(d) 185
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Answer 1

Explanation:

Let the number of 5 value coins be 8x and the number of 10 value coins be 15x.

Total value of the 5 value coins = (8x)(5) = 40x

Total value of the 10 value coins = (15x)(10) = 150x

It is given that the total value of the coins of value 5 is 360. This means that

$40x = 360$

$x = 360/40$

$x = 9$

Therefore,

Number of 10 valued coins = 15x = 15 x 9 = 135

Answer : c. 135

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