Answer:
Equation: 5w + 60 = 125
Answer: 13 weeks
Step-by-step explanation:
Cost of bike: $125.
She has: $60.
(money she has) + (all money saved weekly) = (cost of bike)
60 + (all money saved weekly) = 125
In 1 week she saves $5.
In 2 weeks, she saves $5 * 2
In 3 weeks, she saves $5 * 3
In w weeks, she saves $5 * w = 5w.
"all money saved weekly" is 5w, so we put that in our equation.
60 + 5w = 125
Equation: 5w + 60 = 125
Now we solve the equation for w.
5w + 60 = 125
Subtract 60 from both sides.
5w = 65
Divide both sides by 5.
w = 13
Answer: 13 weeks
