One number is 1 less than a second number. Twice the second number is 25 less than 5 times the first. Find the two numbers.

Question

 I do not understand the question

Answer 1

Let x = the second number

Let x - 1 = the first number

2x = 5(x-1) - 25

2x = 5x - 5 - 25

-3x = -30

x = 10

x - 1 = 9