Question

the rainfall this year was 18.6 cm. this is 3.2 cm less than half of the rainfall last year. what was the rainfall last year?

Answer 1

I got 7.7 for half the year abd 15.4 for the whole year.

Answer 2

let R = rainfall last year in cm.

18.6cm = (R/2) -3.2cm
21.8cm = R/2

R= ?

Answer 3

Its 43.6