The cost of 3 types of wheat are 10 rupee, 14 rupee and 16 rupees. What will be the rate of a mixture of 20 kg, 50 kg and 40 kg wheat of these 3 types respectively?

Kantilal mixes 80 kg of sugar worth of Rs. 6.75 per kg with 120 kg worth of Rs. 8 per kg. At what rate shall he sell the mixture to gain 20%.

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 kg?

The average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg and that of B and C be 43 kg, then what is the weight of B?

If average weight of A, B and C is 45 kg. If the average weight of A and B is 40 kg and that of B and C be 43 kg, then what is the weight of B?