Tina and Jeff are both saving money in their piggy banks. Tina has 100 dollars already and saves $5 every week Jeff has $28 dollars already and saves $8 each week. How many weeks will it take until they have saved the same amount of money.?

Question

Mathematics

Oconnell

10 May, 10:18

Tina and Jeff are both saving money in their piggy banks. Tina has 100 dollars already and saves $5 every week Jeff has $28 dollars already and saves $8 each week. How many weeks will it take until they have saved the same amount of money.?

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Wilma · Answer 1

Set up equations for both Tina and Jeff. Tina puts in $5 each week but starts with $100 her equation would be 5x+100, Jeff starts off with $28 and adds $8 each week, so his equation will be 8x+28. Set the equations equal to each other and isolate the variable. It should look like 5x+100=8x+28, then subtract 28 from 100 giving you 72. Then subtract 5x from 8x, giving you 3x. Then divide by 3 to isolate x, which leads you to divide 72 by 3, giving you 24. Meaning that after 24 weeks Tina and Jeff will have the same amount of money.