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 racke ts price by $5 each week he doesnt sell it. How many weeks until Sara has enough money to buy the racket?
1 answer:
Answer:
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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