CAT 2021 Slot 1 QA Question 14: 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 spen

Question

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 spen

Accepted Answer

Let the fixed monthly expense for each of the first three months be $M$. For each of the last two months, the expense is $\dfrac{M}{2}$.
Total expense over 5 months is
$3M + \dfrac{M}{2} + \dfrac{M}{2} = 4M$
Total quantity bought is
$\dfrac{M}{10} + \dfrac{M}{20} + \dfrac{M}{25} + \dfrac{M}{50} + \d