Answer:
$1050
Step-by-step explanation:
To solve, multiply your two expenses against your $6000 and find the difference.
The man spends 1/5 of his salary on children's education.
To find how much he spends on his children's education in dollars, multiply 1/5 against $6000.
![\frac{1}{5} *6000\\1200](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B5%7D%20%2A6000%5C%5C1200)
The man spends $1200 on children's education.
The man spends 5/8 of his salary on his aged mother and unemployed sister.
Repeat the same process as the first step, this time multiplying 5/8 against $6000.
![\frac{5}{8} *6000\\3750](https://tex.z-dn.net/?f=%5Cfrac%7B5%7D%7B8%7D%20%2A6000%5C%5C3750)
The man spends $3750 on his aged mother and unemployed sister.
Add these two expenses together.
![1200+3750\\4950](https://tex.z-dn.net/?f=1200%2B3750%5C%5C4950)
The man has combined expenses of $4950.
To find how much money he has left, subtract his expenses from his $6000 income.
![6000-4950\\1050](https://tex.z-dn.net/?f=6000-4950%5C%5C1050)
The man has $1050 remaining.