Question

the three numbers are in the ratio 3 ratio 4 ratio 5 the sum of their cube is 0.0017 28 find the numbers

Answer 1

Let the number be=3x, 4x, 5x
Cube of 3x = 27x
Cube of 4x = 64x
Cube of 5x = 125x
Sum of three cube = 216x
216x=0.001728
x=
$\frac{0.001728}{216}$
=
$\frac{1728}{216 \times 1000000}$
$\frac{1728}{216000000}$
= 0.000008 answer