Type 1 rice costs Rs. 15 per kg, whereas Type 2 rice costs Rs. 20 per kg. When Type 1 and Type 2 rice are combined in a 2:3 ratio, the price per kilogramme of the mixed rice type is:
A. Rs. 18
B. Rs. 18.50
C. Rs. 19
D. Rs. 19.50
Answer:A
Type 1 rice costs Rs. 15 per kg, whereas Type 2 rice costs Rs. 20 per kg. When Type 1 and Type 2 rice are combined in a 2:3 ratio, the price per kilogramme of the mixed rice type is:
A. Rs. 18 B. Rs. 18.50 C. Rs. 19 D. Rs. 19.50
Explanation: Let's say the mixed variety's pricing is Rs. x per kilogramme.We have (20 - x)/(x - 15) = 2/3 by the law of alligation.2x - 30 = 60 - 3x,5 times 90,x equals 18.