The total monthly incomes of 12 men is $62400.
34 of them earn the same monthly income each. Each of the remaining men earns 5 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 |
9 |
3 |
|
Value |
1 u |
5 u |
|
Total value |
9 u |
15 u |
24 u |
Number of men with lower incomes
=
34 x 12
= 9
Number of men with higher incomes
= 12 - 9
= 3
Total monthly incomes
= 9 u + 15 u
= 24 u
24 u = 62400
1 u = 62400 ÷ 24 = 2600
Difference between the higher monthly income and the lower monthly income
= 5 u - 1 u
= 4 u
= 4 x 2600
= $10400
Answer(s): $10400