Question

1 kg halwa costs ₹400. find the cost of 200g​

Answer 1

200g = 200/1000 = 0.2kg

cost = 0.2 × 400 = ₹80

Answer 2

given :

cost of 1kg halwa - rs 400

to find :

cost of 200g of halwa

solution :

This question can be easily solved using unitary method. This question is solved using unitary method in the following way -

• cost of 1kg of halwa = 400

• therefore, cost of 1000 gm of halwa = 400

(as we know that 1 kg is equivalent to 1000 gm)

• so 1 gm of halwa costs = 400/1000

now that we have the cost of 1gm of halwa, we can easily calculate the cost of 200 gm of halwa

• 200 gm of halwa = (400/1000) x 200

                                      = 80

Thus, the cost of 200 gm of halwa is Rs 80.