Mike has 880 in his savings account and adds 24 per week At

Mike has $880 in his savings account and adds $24 per week. At the same time, Leslie has $520 in his savings account and adds $36.00 per week. How long will it take Leslie to have the same amount as Mike?

27 weeks

26 weeks

25 weeks

28 weeks

24 weeks

Solution

Suppose after t weeks both have same amount.

then 880 + 24t = 520 + 36t

36t - 24t = 880 - 520

12t = 360

t = 360/12 = 30

thus after 30 weeks, they have same amount.