Explanation:
Let x be Mr Frank's monthly salary.
Then:
Food = 0.2x
Children = 0.25x
Parent = 0.2x
Car = 0.1x
Entertainment = 0.1x
Savings = 0.06x = 250
Cloth = 0.01x
Solving for x:
0.06x = 250
x = 250/0.06
x = 4166.67
Therefore, Mr Frank's monthly salary is 4166.67 cedis.
Total amount spent on parents:
Parent = 0.2x
Parent = 0.2(4166.67)
Parent = 833.33
Therefore, the total amount spent on his parents is 833.33 cedis.