The total monthly incomes of 10 men is $51000.
25 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 |
4 |
6 |
|
Value |
1 u |
5 u |
|
Total value |
4 u |
30 u |
34 u |
Number of men with lower incomes
=
25 x 10
= 4
Number of men with higher incomes
= 10 - 4
= 6
Total monthly incomes
= 4 u + 30 u
= 34 u
34 u = 51000
1 u = 51000 ÷ 34 = 1500
Difference between the higher monthly income and the lower monthly income
= 5 u - 1 u
= 4 u
= 4 x 1500
= $6000
Answer(s): $6000