The total monthly incomes of 20 men is $66000.
35 of them earn the same monthly income each. Each of the remaining men earns 4 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 |
12 |
8 |
|
Value |
1 u |
4 u |
|
Total value |
12 u |
32 u |
44 u |
Number of men with lower incomes
=
35 x 20
= 12
Number of men with higher incomes
= 20 - 12
= 8
Total monthly incomes
= 12 u + 32 u
= 44 u
44 u = 66000
1 u = 66000 ÷ 44 = 1500
Difference between the higher monthly income and the lower monthly income
= 4 u - 1 u
= 3 u
= 3 x 1500
= $4500
Answer(s): $4500