Onion is sold for 5 consecutive months at the rate of Rs 10, 20, 25, 25, and 50 per kg, respectively. A family spends a fixed amount of money on onion for each of the first three months, and then spends half that amount on onion for each of the next two months. The average expense for onion, in rupees per kg, for the family over these 5 months is closest to
Explanation:
Let the amounts spent by the family each month be LCM (10, 20, 25, 50) = Rs. 100 for the first 3 months and then Rs. 50 for the next two months.
Amount of onion bought during month 1 = 100/10 = 10 kgs Amount of onion bought during month 2 = 100/20 = 5 kgs Amount of onion bought during month 3 = 100/25 = 4 kgs Amount of onion bought during month 4 = 50/25 = 2 kgs Amount of onion bought during month 5 = 50/50 = 1 kgs
∴ Total amount of onion bought = 10 + 5 + 4 + 2 + 1 = 22 kgs Total amount spend on onions = 100 + 100 + 100 + 50 + 50 = Rs. 400.
∴ Average expense for onion per kg for these 5 months = 400/22 = 18.18 ≈ Rs. 18/kg.
Hence, option (c).
» Your doubt will be displayed only after approval.
Help us build a Free and Comprehensive Preparation portal for various competitive exams by providing us your valuable feedback about Apti4All and how it can be improved.