1.

Find the numbers which are in the ratio 3 : 2 : 4 such that the sum of the first and the second added to the difference of the third and the second is 21 ?

Answer»

9, 6, 12



Let the numbers be a, b and c.

Given that a, b and c are in the ratio 3 : 2 : 4

let, a = 3x, b = 2x and c = 4x

Given, (a+b) + (c - b) = 21

= > a + b+ c - b = 21



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