The total monthly incomes of 24 men is $109200.
38 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 |
9 |
15 |
|
Value |
1 u |
5 u |
|
Total value |
9 u |
75 u |
84 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 + 75 u
= 84 u
84 u = 109200
1 u = 109200 ÷ 84 = 1300
Difference between the higher monthly income and the lower monthly income
= 5 u - 1 u
= 4 u
= 4 x 1300
= $5200
Answer(s): $5200