Question

Midstate has averaged 1.2 inches of rain for each of the last ten months. For how many months must the Midstate average 1.6 inches of rain to bring the overall average rainfall for the period to 1.5 inches?

Answer 1

I think there must be 3 more months to average 1.6 inches.
1.2/10= 0.12 inches each month

0.12x3=0.36+1.2=1.56 inches

1.56 inches is around 1.5 and 1.6

Hope this helps! ;)