Sara wants to buy a tennis racket for $120. She has $40 and is saving $10 every week. The owner of the store decreases the rackets price by $5 each week he doesnt sell it. How many weeks until Sara has enough money to buy the racket?

After the sixth week, she would have more than enough money to buy the racket.

Step-by-step explanation:

First Week

Sarah = 40 + 10 = 50

Owner = 120 - 5 = 115

Second Week

Sarah = 50 + 10 = 60

Owner = 115 - 5 = 110

Third Week

Sarah = 60 + 10 = 70

Owner = 110 - 5 = 105

Fourth Week

Sarah = 70 + 10 = 80

Owner = 105- 5 = 100

Fifth Week

Sarah = 80 + 10 = 90

Owner = 100 - 5 = 95

Sixth Week

Sarah = 90 + 10 = 100

Owner = 95 - 5 = 90

After the sixth week, she would have more than enough money to buy the racket.

How many weeks until Sara has enough money to buy the racket?

40 + 10x = 120 - 5x

10x + 5x = 120 - 40

15x = 80

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