Question

(C) a-3, 6-1, 0-2, d-4
23. When a number is divided by 25, its cube root is X. When it is multiplied with 5, then its
cube root is y. If x + y = 36, then the number is
(A) a=5400
(B) a= 5300 (C) a = 5900 (D) None of these​

Answer 1

Answer:

Let the number be n

Then

According to question

25/n = Cube root of x

Thus

x = (25/n)^3

x   = 15625 / n^3        Eqn1

And Similarly

n * 5 = Cube  Root of y

Thus

125 n^3 = y

Now we are given that

x + y = 36

Thus

15625 / n^3 + 125 n^3 = 36

15625 + 125 n^6 = 36 n^3

n = 5400

thus

a = 5400 - 5395

 a  = 5

Step-by-step explanation:

Hope it helps