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Marianna wants to buy a new tennis racket that costs $57.50. She has $8 and plans to save $4.50 each week. How many weeks will it take her to save the money?

Respuesta :

She already has $8 so we will first subtract to see how much more money she needs. 

57.50 - 8 = 49.50

So, Marianna needs $49.50 more. To find out how many weeks it will take her to get this amount we will divide. 

49.50 ÷ 4.50 = 11

So, It will take Marianna 11 weeks to save enough money for her new tennis racket.

Hope I helped ya!! 
let the total week=x
she had 8 per week
she save 4.50 per week
total amount of racket=57.50
eqn
total week*amount save per week +amount per week=total amount of rackets
4.50x+8=57.50
x=(57.50-8)/4.50
x=11

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