Question

One number is 5 more than 4 times another. Their sum is 40. Find the two numbers.

Answer 1

7 and 33

Explanation:

Two equations:

x = 5 + 4y

x + y = 40

Substitute x for 5 + 4y:

5 + 5y = 40

5y = 35

y = 7

Substitute y for 7:

x = 5 + 4(7)

x = 33