Question

A student solved this problem by making a table.

Andy has $150. Marta has $120. In how many years will they both have the same amount of money if Andy saves $110 per year and Marta saves $120?


Andy $150 $260 $370 $480
Marta $120 $240 $360 $480
Year 0 1 2 3


Here is a problem that can also be solved by making a table.

Josie has $80. Addie has $60.

In how many months will they both have the same amount of money if Josie saves $30 per month and Addie saves $40?


months

Answer 1

Josie will have 110 in 1 month then 140 in the second month, Addie will have 100 in 1 month then in the second month she will have 140. So they will have the same amount in 2 months.