In a bag of rice of Rs. 70 per kg, two different types are mixed. First type of rice is 8 kg in quantity of Rs. 60 per kg, while the second type of rice is 4 kg in quantity. What is the price per kg of the second type of rice?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Rs.90.
Given:
The price of the mixed rice = Rs 70 /kg
The price of the first type rice = Rs 60 per kg
Explanation:
Let the price of the first type rice = Rs x per kg
The quantities of the first and second types of rice is 8 kg and 4 kg.
Let's assume the price of the second rice is Rs x/kg
According to the question,
⇒ 70 = (60 × 8 + x × 4)/(8 + 4)
⇒ 840 = 480 + 4x
⇒ x = 360/4
⇒ x = Rs 90 /kg