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

Assuming that I am properly understand your question, all you have to do is get the initial values for each individual and add their savings monthly.

Starting
Josie: 80
Addie: 60

One month
Josie: 110
Addie: 100

Two months
Josie: 140
Addie: 140

So two months would be the answer.

You could also do...
x = months

80 + 30x = 60 + 40x
20 + 30x = 40x
20 = 10x (Divide by ten on both sides)
2 = x

2 Months