Question
A person "P" allocates their monthly income as follows:
First, 25% is spent on education. From the remaining amount, 40% is used for food. After that, 20% of what remains is spent on groceries. The gap between the expenses on food and groceries is Rs. 4200. Determine P’s total monthly income.Solution
ATQ;
Education = 25%
Remaining = 75%
Food = 40% of 75% = 30% of total
Left after food = 75% – 30% = 45%
Groceries = 20% of 45% = 9% of total
Difference = Food – Groceries = (30% – 9%) = 21%
If 21% = Rs. 4200
Total income = 4200 × (100 / 21) = Rs. 20000
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