Question

Salma is saving money to buy a bike. She has $42 and is going to save an additional $7 each week. The bike costs $133 in how many weeks will she haven enough money to buy the bike?

Answer 1

Let the number of weeks required be T

42 + 7T = 133

7T = 133 - 42

7T = 91

Divide both sides by 7

T = 91/7

T = 13

13 weeks is required.