The cost of 36 kg of rice last year was ₹ 1044 and the cost of 24 kg of rice this year is ₹ 768. What is the difference between the cost per kg of rice last year and the cost per kg of rice this year?
(a)₹ 3
(b)₹ 4
(c)₹ 5
(d)₹ 6
(e)None of these
Answer
Answer (as printed): A
Explanation
Cost per kg of rice last year $=₹\left(\frac{1044}{36}\right)=₹ 29$. Cost per kg of rice this year $=₹\left(\frac{768}{24}\right)=₹ 32$. $$\therefore \quad \text { Required difference }=₹(32-29)=₹ 3 .$$
Explanation as extracted from the printed page; notation may be imperfect.