The total monthly incomes of 20 men is $48000.
45 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 |
16 |
4 |
|
Value |
1 u |
4 u |
|
Total value |
16 u |
16 u |
32 u |
Number of men with lower incomes
=
45 x 20
= 16
Number of men with higher incomes
= 20 - 16
= 4
Total monthly incomes
= 16 u + 16 u
= 32 u
32 u = 48000
1 u = 48000 ÷ 32 = 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