Find the ratio in which rice at Rs. 7.20 a kg is mixed with rice at Rs. 5.70 a…
2017
Find the ratio in which rice at Rs. 7.20 a kg is mixed with rice at Rs. 5.70 a kg to produce a mixture worth Rs. 6.30 a kg?
- A.
1:3
- B.
2:3
- C.
3:4
- D.
4:5
Attempted by 6 students.
Show answer & explanation
Correct answer: B
Using alligation: dearer rice = 7.20, cheaper rice = 5.70, mean price = 6.30. Ratio = (6.30 - 5.70) : (7.20 - 6.30) = 0.60 : 0.90 = 2 : 3.