The total monthly incomes of 24 men is $79800.
34 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 |
18 |
6 |
|
Value |
1 u |
4 u |
|
Total value |
18 u |
24 u |
42 u |
Number of men with lower incomes
=
34 x 24
= 18
Number of men with higher incomes
= 24 - 18
= 6
Total monthly incomes
= 18 u + 24 u
= 42 u
42 u = 79800
1 u = 79800 ÷ 42 = 1900
Difference between the higher monthly income and the lower monthly income
= 4 u - 1 u
= 3 u
= 3 x 1900
= $5700
Answer(s): $5700