The total monthly incomes of 25 men is $101500.
45 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 |
20 |
5 |
|
Value |
1 u |
3 u |
|
Total value |
20 u |
15 u |
35 u |
Number of men with lower incomes
=
45 x 25
= 20
Number of men with higher incomes
= 25 - 20
= 5
Total monthly incomes
= 20 u + 15 u
= 35 u
35 u = 101500
1 u = 101500 ÷ 35 = 2900
Difference between the higher monthly income and the lower monthly income
= 3 u - 1 u
= 2 u
= 2 x 2900
= $5800
Answer(s): $5800