Problema Solution
the rainfall this year was 18.6 centimeters. this is 3.2 centimeters less than half of the rainfall last year. what was the rainfall last year?
Answer provided by our tutors
let
x = the rainfall last year
the rainfall this year 18.6 centimeters is 3.2 centimeters less than half of the rainfall last year
18.6 = x/2 - 3.2
x/2 - 3.2 = 18.6
by solving the equation we find
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x = 43.6 cm
the rainfall last year was 43.6 centimeters.