SOLUTION: John has $150 in his piggy bank and plans to add $2 each week. Sabrina has $200 in her piggy bank and plans to add $6 each week. After how many weeks will Sabrina’s piggy bank ha
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Question 1130129: John has $150 in his piggy bank and plans to add $2 each week. Sabrina has $200 in her piggy bank and plans to add $6 each week. After how many weeks will Sabrina’s piggy bank have twice as much money as John’s piggy bank. Answer by addingup(3677) (Show Source):
You can put this solution on YOUR website! How many weeks? We don't know. Let's call it x
2(150 + 2x) = 200 + 6x
300 + 4x = 200 + 6x
100 = 2x
x = 100/2 = 50
At 50 weeks Sabrina’s piggy bank will have twice as much money as John’s piggy bank
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Check:
2(150 + 2(50)) = 200 + 6(50)
300 + 200 = 200 + 300 Add each side and you'll see the answer is correct.
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Happy learning
