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!
- ?Lv 75 months agoFavourite 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 <––––––