SOLUTION: I am trying to solve a system word problem by the using the elimination method. Della has $160 and saves $7 per week. Cassie has $210 and saves $5 per week. After how many week

Question 1064679: I am trying to solve a system word problem by the using the elimination method.
Della has $160 and saves $7 per week. Cassie has $210 and saves $5 per week. After how many weeks will each person have saved the same amount of money?
Answer by ikleyn(52787) (Show Source): You can put this solution on YOUR website!
.
This problem is NOT about the system of equations.

It is solved using ONE equation:

160 + 7w = 210 + 5w,

where w is the number of weeks.

The solution is 

7w - 5w = 210 - 160,

2w = 50,

w =  = 25.

Answer. After 25 weeks.

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