Find the ratio in which rice at Rs. 7.20 a kg be mixed with rice at Rs. 5.70 a kg to produce a mixture worth Rs. 6.30 a kg.

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Find the ratio in which rice at Rs. 7.20 a kg be 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

Answer: Option B

Explanation:

By the rule of alligation:

Cost of 1 kg of 1st kind
Cost of 1 kg of 2nd kind
720 p Mean Price
630 p 		570 p
60 90

Required ratio = 60 : 90 = 2 : 3.