Rishu saves x% of her income. If her income increases by 26% and the expenditure increases by 20%, then her savings increase by 50%. What is the value of x?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 20
Concept
Using Alligation Method
Application
Increase in Expenditure Increase in Saving
Increase in Income
Ratio of Expenditure Ratio of Saving
Putting the values
20 50
26
(50 - 26 = 24) (26 - 20 = 6)
Expenditure / Saving = 24 / 6 = 4: 1
Total Income = Expenditure + Saving = 5 units
Saving = 100 x ( 1 / 5) = 20%