Question

Ram went to a shop to buy 50 kg of rice. He buys two kinds of rice which cost him Rs. 4.50 per kg and Rs. 5.00 per kg. He spends a total of Rs. 240. What was the quantity of rice bought which cost him Rs. 4.50 per kg.

• A. 25 kg
• B. 30 kg
• C. 20 kg
• D. None of these

Answer 1

Answer: (C)

20 kg

Answer 2

Let's take the quantity of Rs. $4.50$ rice bought to be $x$ kgs.
From the question, we know that
$4.5x+5(50-x)=240$
$4.5x+250-5x=240$
After solving the above equation, we get
$250-0.5x=240$

$x=\frac{-10}{-0.5}$

$x=20$ kgs
The correct option is (C)