The total monthly incomes of 20 men is $127600.
25 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 |
8 |
12 |
|
Value |
1 u |
3 u |
|
Total value |
8 u |
36 u |
44 u |
Number of men with lower incomes
=
25 x 20
= 8
Number of men with higher incomes
= 20 - 8
= 12
Total monthly incomes
= 8 u + 36 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