5 kg of ₹18 per kg wheat is mixed with 2 kg of another type of wheat to get a mixture costing ₹20 per kg. Find the price (per kg) of the costlier wheat.
Answer & explanation
Correct answer: option 2
The amount of wheat is 5 Kg and price is Rs.18/Kg
The amount of wheat is 2 Kg
The amount of wheat is 7 Kg and price is Rs. 20/Kg
⇒ 5 x 18 + 2 x y = 7 x 20,
⇒ 90 + 2y = 140,
⇒ 2y = 50,
⇒ y = Rs. 25,
Therefore price of costlier wheat is Rs. 25 /Kg.