Question

Ifa=12 and 120% of a is equal to 80% of b, then what is
a+b?
Rsm question

Answer 1

a + b = 30

Explanation:

If we convert the percentages to decimals (120% = 1.2 & 80% = 0.8), we can use this equation to find B: 1.2A = 0.8b

Since we know a, we then have 1.2 * 12 = 0.8b

Solving for B gives us b = 18

12 + 18 = 30