The total monthly incomes of 30 men is $86400.
45 of them earn the same monthly income each. Each of the remaining men earns 4 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 |
24 |
6 |
|
Value |
1 u |
4 u |
|
Total value |
24 u |
24 u |
48 u |
Number of men with lower incomes
=
45 x 30
= 24
Number of men with higher incomes
= 30 - 24
= 6
Total monthly incomes
= 24 u + 24 u
= 48 u
48 u = 86400
1 u = 86400 ÷ 48 = 1800
Difference between the higher monthly income and the lower monthly income
= 4 u - 1 u
= 3 u
= 3 x 1800
= $5400
Answer(s): $5400