The total monthly incomes of 10 men is $31200.
35 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 |
6 |
4 |
|
Value |
1 u |
5 u |
|
Total value |
6 u |
20 u |
26 u |
Number of men with lower incomes
=
35 x 10
= 6
Number of men with higher incomes
= 10 - 6
= 4
Total monthly incomes
= 6 u + 20 u
= 26 u
26 u = 31200
1 u = 31200 ÷ 26 = 1200
Difference between the higher monthly income and the lower monthly income
= 5 u - 1 u
= 4 u
= 4 x 1200
= $4800
Answer(s): $4800