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?
Ans is 7:3
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%?
How many kg of salt at 25 paise per kg must be mixed with 50 kg of salt costing 42 paise per kg so that a merchant will get a profit of 30% by selling the mixture at 39 paise per kg?
How many kilogram of sugar costing Rs. 9 per kg must be mixed with 27 kg of sugar costing Rs. 7 per kg so that there may be a gain of 10% by selling the mixture at Rs. 9.24 per kg?
6 boys and 8 men get a total wage of Rs. 8000 in 4 days.
8 boys and 6 men get a total of Rs. 6000 in 3 days.
What will be the efficiency ratio of a boy and a man respectively?