The total monthly incomes of 15 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 |
12 |
3 |
|
| Value |
1 u |
4 u |
|
| Total value |
12 u |
12 u |
24 u |
Number of men with lower incomes
=
45 x 15
= 12
Number of men with higher incomes
= 15 - 12
= 3
Total monthly incomes
= 12 u + 12 u
= 24 u
24 u = 48000
1 u = 48000 ÷ 24 = 2000
Difference between the higher monthly income and the lower monthly income
= 4 u - 1 u
= 3 u
= 3 x 2000
= $6000
Answer(s): $6000
