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 have enough money to buy the bike?

Answer 1

lets first set up equation:

$133 is the end goal = $42 ( what she has) + $7 (X # of weeks saving)

133= $42 + 7X —> subtract $42 on both sides

-42 -42

91= 7X —> divide by 7

x= 13

Answer: 13 weeks of saving would be needed to purchase the bike!