The total monthly incomes of 16 men is $89600.
34 of them earn the same monthly income each. Each of the remaining men earns 5 times as much per month. Find the difference between the higher monthly income and the lower monthly income.
|
Men with lower incomes |
Men with higher incomes |
Total incomes |
Number |
12 |
4 |
|
Value |
1 u |
5 u |
|
Total value |
12 u |
20 u |
32 u |
Number of men with lower incomes
=
34 x 16
= 12
Number of men with higher incomes
= 16 - 12
= 4
Total monthly incomes
= 12 u + 20 u
= 32 u
32 u = 89600
1 u = 89600 ÷ 32 = 2800
Difference between the higher monthly income and the lower monthly income
= 5 u - 1 u
= 4 u
= 4 x 2800
= $11200
Answer(s): $11200