Question

The sum of two numbers is 40. The second number is 5 less than twice the first number. Let x represent the first number and let y represent the second number. What is the value of the first number? Use the table to guess and check.

15
20
25
30

Answer 1

Answer:

15

Step-by-step explanation:

Given : x + y = 40 and y = 2x - 5

A. T. Q

x + y = 40

x + 2x - 5 = 40

3x = 40 + 5

3x = 45

x = 15