The total monthly incomes of 28 men is $127600.
57 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 |
8 |
|
Value |
1 u |
3 u |
|
Total value |
20 u |
24 u |
44 u |
Number of men with lower incomes
=
57 x 28
= 20
Number of men with higher incomes
= 28 - 20
= 8
Total monthly incomes
= 20 u + 24 u
= 44 u
44 u = 127600
1 u = 127600 ÷ 44 = 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