Question

One-fifth of a number is equal to 5/8th of another number. if 35 is added to the first number, it becomes four times of the second number. find the second number

Answer 1

X / 5 = 5/8 * y First equation
35 + x = 4 y second equation
We should solve the first equation
X = 5 ( 5 / 8 * y)
Then we see second equation
And put 5 ( 5 / 8 * y) in place of x

35 + 5 ( 5 / 8 * y) = 4y
Then solve whole question