In what ratio must a grocer mix two varieties of pulses costing Rs. 15 and Rs. 20 per kg respectively so as to get a mixture worth Rs. 16.50 per kg (R.R.B. 2003)

Answer:

A) 3 : 7

B) 5 : 7

C) 7 : 3

D) 7 : 5

Explanation:

By the rule of alligation :
∴ Required rate = 3.50 : 1.50 = 35 : 15 = 7 : 3

The cost of Type 1 rice is Rs. 15 per kg and Type 2 rice is Rs. 20 per kg. If both Type 1 and Type 2 are mixed in the ratio of 2 : 3, then the price per kg of the mixed variety of rice is : (M.B.A. 2002)

Answer:

A) Rs. 18

B) Rs. 18.50

C) Rs. 19

D) Rs. 19.50

Explanation:

Let the price of the mixed variety be Rs. x per kg.

In what ratio must a grocer mix two varieties of tea worth Rs. 60 a kg and Rs. 65 a kg so that by selling the mixture at Rs. 68.20 a kg he may gain 10% (S.S.C. 2004)

Answer:

A) 3 : 2

B) 3 : 4

C) 3 : 5

D) 4 : 5

Explanation:

S.P. of 1 kg of the mixture = Rs. 68.20, Gain = 10%