A container contains a mixture of two liquids P and Q in the ratio 7 : 5. When 9 litres of mixture are drawn off and the container is filled with Q, the ratio of P and Q becomes 7 : 9. How many litres of liquid P was contained in the container initially?
In what ratio must a grocer mix two varieties of pulses costing Rs.15 and Rs. 20 per kg respectively to obtain a mixture worth Rs.16.50 per Kg?
A vessel is filled with liquid, 3 parts of which are water and 5 parts of syrup. How much of the mixture must be drawn off and replaced with water so that the mixture may be half water and half syrup?
According to the question, Ratio of initial mixture will be same as ratio of mixture after taken out
Mixture is taken out
Initial mixture = 8+2=10
taken out = 2
In what ratio must water be mixed with milk to gain 16 2/3 % on selling the mixture at cost price?
Let C.P. of 1 litre milk be Rs. 1
S.P. of 1 litre of mixture = Rs. 1, Gain =
∴ C.P. of 1 litre of mixture =
BY the rule of alligation, we have:
∴ Ration of water and milk =