If x and y are positive integers and x = 10y + 5, what is the remainder when x is divided by 5?

[BTGModeratorVI]

If x and y are positive integers and x = 10y + 5, what is the remainder when x is divided by 5?

A. 0
B. 1
C. 2
D. 3
E. 4

Answer: A
Source: Manhattan prep

[Brent@GMATPrepNow]

If x and y are positive integers and x = 10y + 5, what is the remainder when x is divided by 5?

A. 0
B. 1
C. 2
D. 3
E. 4

Answer: A
Source: Manhattan prep

GIVEN: x = 10y + 5
Factor out 5 to get: x = 5(2y + 1)
We can see that x is a multiple of 5, which also means x is divisible by 5, which means the remainder will by ZERO when x is divided by 5

Answer: A

Cheers,
Brent