The total monthly incomes of 16 men is $40800.
34 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 |
12 |
4 |
|
Value |
1 u |
3 u |
|
Total value |
12 u |
12 u |
24 u |
Number of men with lower incomes
=
34 x 16
= 12
Number of men with higher incomes
= 16 - 12
= 4
Total monthly incomes
= 12 u + 12 u
= 24 u
24 u = 40800
1 u = 40800 ÷ 24 = 1700
Difference between the higher monthly income and the lower monthly income
= 3 u - 1 u
= 2 u
= 2 x 1700
= $3400
Answer(s): $3400