Question

Three numbers are in the ratio 2 : 3:5
to one another. The sum of their cubes is
54880. The numbers are_
(A) 14, 21, 35 (B) 12, 15, 17
(C) 14, 18, 21 (D) 21, 28, 32​

Answer 1

Answer:

answer is A

Step-by-step explanation:

Given ratio of numbers is 2:3:5

so let the numbers are 2x, 3x, 5x

according to question

(2x)3+(3x) 3+(5x) 3=54880

(8+27+125)x3=54880

x3=54880/160

x3=343

x=7

numbers are 2x7, 3x7, 5x7

14,21,35