Three numbers A B and C are in the ratio of 12 15 25 If sum of these numbers is 312 ratio between th...........

Quant (SSC) Ratio, Proportion

Three numbers A, B and C are in the ratio of 12 : 15 : 25. If sum of these numbers is 312, ratio between the difference of B and A and the difference of C and B is –

3 : 7

10 : 3

3 : 10

5 : 7

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Explanation:

Let the number A, B and C be 12a , 15a and 25a respectively
Then from the question 12a + 15a + 25a = 312
⇒ a = 312 /52 = 6
⇒ required ratio = 15 x 6 - 12 x 6 / 25 x 6 - 15 x 6
⇒ 3/10 = 3 : 10