rani gives 0.025 part of her salary as pocket money to her son guo every month. guo spends 0.8 part of his pocket money ans saves the rest. if he saves RS 277.50 in 3 months, how much does rani earn in a month
Let Rani's salary be Rs. 1000a. (a not equal to 0) in 1 month. Son gets = Rs. 1000a × 25/1000 = Rs 25a. Son saves = Rs (1- 8/10) × 25a = Rs 5a. By the problem, 5a=277.50/3 1000a = 18,500. Rani earns Rs. 18,500 in one month. (Ans.)
