Bob has $150 in his savings account and saves $40 a month. Andrea has only $100 in her account but saves at a rate of $50 a month. When will Andrea have saved more than Bob?

Question

Amethyst

Mathematics

4 August, 05:59

Bob has $150 in his savings account and saves $40 a month. Andrea has only $100 in her account but saves at a rate of $50 a month. When will Andrea have saved more than Bob?

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Answers (1)

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Madilynn Wolf · Answer 1

X = number of months

Bob = 150 + 40x

Andrea = 100 + 50x

100 + 50x > 150 + 40x

50x > 50 + 40x

10x > 50

x > 5

So starting month 6, Andrea will have saved more than Bob.