Question

alex has $10 and begins saving $6 each week toward buying a nee phone. at the time that alex begins saving, sarah has $70 and begins saving $3 per week on supplies for her art class. when will alex and sarah have the same savings

Answer 1

Alex will have the sames savings as Sarah at week 20

Explanation:

Make equations for both savings with this format:

Savings = weekly savings * x + starting money

Alex's savings = 6x + 10

Sarah's savings = 3x + 70

(x = the number of weeks)

Then we change the x value up one value until both matches (or use a graphing tool/calculator (whichever works)).

If we set x = 20 (weeks), both savings will be equal at $130.

Hope it helps.