Question

2. Three numbers are to one another 2 : 3:4. The sum of their cubes is 33957. The first number is number: (a) 5 (b) 6 (c) 14 (d) 7​

Answer 1

Answer:

c)= 14

sum of cube :-

(2x)^3 + (3x)^3 + (4x)^3 = 33957

=>99x^3 = 33957

=> x^3 = 33957÷99 = 343

=> x= √343 = 7

2x = 2×7= 14