Answer:
7 hours
Step-by-step explanation:
20.00 + 10x = 90
10x = 70
x = 7
Answer:
20 + 10x = 90 (where x is the number of hours spent raking leaves)
7 hours
Step-by-step explanation:
let x = number of hours spent raking leaves
Given:
20 + 10x = 90
To solve: 20 + 10x = 90
Subtract 20 from both sides:
⇒ 10x = 70
Divide both sides by 10:
⇒ x = 7
Therefore he spent 7 hours raking the leaves.