The total monthly incomes of 24 men is $75900.
38 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 |
9 |
15 |
|
Value |
1 u |
4 u |
|
Total value |
9 u |
60 u |
69 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 + 60 u
= 69 u
69 u = 75900
1 u = 75900 ÷ 69 = 1100
Difference between the higher monthly income and the lower monthly income
= 4 u - 1 u
= 3 u
= 3 x 1100
= $3300
Answer(s): $3300