Question
The ratio of the expenditure to the savings of Richa is
2 : 1. If her income and expenditure increase by 20% and 15%, respectively, then find the percentage increase in her savingsaSolution
Let her initial expenditure and savings be 2k and k respectively. Her initial income = 2k + k = 3k Her final income = 3k× (1 + 20%) = 3.6k Her final expenditure = 2k x (1 + 15%) = 2.3k Her final savings = 3.6k- 2.3k = 1.3k Now, % change in savings = (k-1.3k/k) x 100% = 30%
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