Question

250 g of tea costs ₹50. What is the cost of 2 kg of tea?

• A. ₹375
• B. ₹300
• C. ₹200
• D. ₹400

Answer 1

The correct option is D ₹400

Cost of 250 g of tea = ₹ 50
Also, we know that 1000 g = 1 kg.
Let us first find the cost of 1 kg of tea.

1 kg = 1000 g
= 250 g + 250 g + 250 g + 250 g
Then, the cost of 1 kg of tea is $₹50+₹50+₹50+₹50=₹200.$
Therefore, the cost of 2 kg of tea is $2\times ₹200=₹400.$

We could also have found the cost of 2 kg of tea directly using the fact that
$2\text{kg}=2\times 1\text{kg}=2\times 1000\text{g}=2000\text{g}.$