The total monthly incomes of 15 men is $59400.
45 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 |
3 |
|
Value |
1 u |
5 u |
|
Total value |
12 u |
15 u |
27 u |
Number of men with lower incomes
=
45 x 15
= 12
Number of men with higher incomes
= 15 - 12
= 3
Total monthly incomes
= 12 u + 15 u
= 27 u
27 u = 59400
1 u = 59400 ÷ 27 = 2200
Difference between the higher monthly income and the lower monthly income
= 5 u - 1 u
= 4 u
= 4 x 2200
= $8800
Answer(s): $8800