Question

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

PLEASE HELP!!!!
Please Please Please!

Answer 1

150 + 110y = 120 + 120y
110y - 120y = 120 - 150
-10y = -30
y = 3 years

check..
150 + 110(3) = 120 + 120(3)
150 + 330 = 120 + 360
480 = 480 (correct)

Andy and Marta will have the same amount of money in 3 years
=================
80 + 30m = 30 + 40m
30m - 40m = 30 - 80
-10m = - 50
m = 5

check...
80 + 30(5) = 30 + 40(5)
80 + 150 = 30 + 200
230 = 230 (correct)

Josie and Addie will have the same amount of money in 5 months

any questions ?

Answer 2

Thanks So Much. I Dont Have Any Questions.

Answer 3

glad to help :)