The total monthly incomes of 24 men is $151200.
38 of them earn the same monthly income each. Each of the remaining men earns 3 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 |
9 |
15 |
|
Value |
1 u |
3 u |
|
Total value |
9 u |
45 u |
54 u |
Number of men with lower incomes
=
38 x 24
= 9
Number of men with higher incomes
= 24 - 9
= 15
Total monthly incomes
= 9 u + 45 u
= 54 u
54 u = 151200
1 u = 151200 ÷ 54 = 2800
Difference between the higher monthly income and the lower monthly income
= 3 u - 1 u
= 2 u
= 2 x 2800
= $5600
Answer(s): $5600