SOLUTION: Marge has $30 and is saving at the rate of $7 per week. Hank has $90 and is saving a the rate of $3 per week. How many weeks will it take for them to save the same amount?

Question 1013332: Marge has $30 and is saving at the rate of $7 per week. Hank has $90 and is saving a the rate of $3 per week. How many weeks will it take for them to save the same amount?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Marge has $30 and is saving at the rate of $7 per week.
M(x) = 30 + 7x
-----------------------
Hank has $90 and is saving a the rate of $3 per week.
H(x) = 90 + 3x
------------------------
How many weeks will it take for them to save the same amount?
---------
Solve:: M(x) = H(x) for "x"::
------
30+7x = 90+3x
4x = 60
x = 15 weeks
--------------
Cheers,
Stan H.
========

RELATED QUESTIONS
Jack has $50 in the bank and is saving $30 per week. Tom currently has no money but... (answered by addingup)

Anisa has $35.50 and is saving $4.25/week. Nadia has $24.25 and is saving $5.50/week. In... (answered by josmiceli)

Alex is saving money because she would like to purchase the new video gaming system that... (answered by rajagopalan)

Demarcus has $30, and Liu has $14. Demarcus is saving $4 per day, and Liu is saving $6... (answered by richwmiller)

Moe and Larry each need to raise $200 to go on a trip with their school band. Moe has... (answered by stanbon)

Jack has $55, and Emily has $28. Jack is saving $4 per day, and Emily is saving $13 per... (answered by ewatrrr)

Alex has $50 and is savings $75 each week. Jen has $200 and is saving $60 each week. in... (answered by richwmiller)

You are saving $100 a week to buy a new computer. Your brother is saving at a weekly rate (answered by stanbon)

Sadie is saving her money to buy to buy a new pony which cost $600.She has already saved... (answered by josmiceli)