Anonymous asked in Education & ReferenceHomework Help · 5 months ago

How to solve this math problem?

Julie makes $200 bi weekly and spends $50 every paycheck, saving the rest. She currently has $550 in savings. Billy makes $300 bi weekly and only spends $20 per pay check. He does not have a savings. How many months will it take for Billy to surpass Julie's savings?

I remember there was a certain formula when I was taking precalculus, but now I just don't remember at all. Thanks for helping me out!

1 Answer

  • ?
    Lv 7
    5 months ago
    Favourite answer

    x = number of biweekly paychecks

    Julie = Billy

    550 + (200 - 50)x = (300 - 20)x

    550 + 150x = 280x

    Subtract 150x from both sides

    550 = 130x

    Divide both sides by 130

    x ≈ 4.23

    billy will pass Julie on the 5th paycheck

    which is 2.5 months <––––––

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