The total monthly incomes of 24 men is $67200.
58 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 |
15 |
9 |
|
Value |
1 u |
3 u |
|
Total value |
15 u |
27 u |
42 u |
Number of men with lower incomes
=
58 x 24
= 15
Number of men with higher incomes
= 24 - 15
= 9
Total monthly incomes
= 15 u + 27 u
= 42 u
42 u = 67200
1 u = 67200 ÷ 42 = 1600
Difference between the higher monthly income and the lower monthly income
= 3 u - 1 u
= 2 u
= 2 x 1600
= $3200
Answer(s): $3200