The total monthly incomes of 10 men is $43200.
45 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 |
8 |
2 |
|
Value |
1 u |
5 u |
|
Total value |
8 u |
10 u |
18 u |
Number of men with lower incomes
=
45 x 10
= 8
Number of men with higher incomes
= 10 - 8
= 2
Total monthly incomes
= 8 u + 10 u
= 18 u
18 u = 43200
1 u = 43200 ÷ 18 = 2400
Difference between the higher monthly income and the lower monthly income
= 5 u - 1 u
= 4 u
= 4 x 2400
= $9600
Answer(s): $9600