Q1. The ratio of milk and water in a container is 3:2. If 7 Lit milk is added in the container then ratio becomes 2:1, then find out the initial quantity of mixture in the container?
(a) 45 lit
(b) 35 lit
(c) 55 lit
(d) 65 lit
(e) 30 lit
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Q3. The ratio of alcohols and water in tank A is 2:3 and that of in tank B is 3:2. If same quantity of both mixtures mixed, then find out the percentage value of alcohols in the mixture?
Q4. The ratio of alcohols and water in tank A is 2:3 and that of in tank B is 3:2. Now both the mixture is mixed in ratio of 2:3. Find out the ratio of alcohols and water in the final mixture?
Q5. Two containers A and B of same capacity are mixed into a bigger container. Container A contains milk and water in the ratio of 2:3 and container B contains milk, water and powder in the ratio of 3:5:2. Find out the percentage quantity of milk in the bigger containers?
Q6. Pipe A and Pipe B together can fill the tank in 60 min. Efficiency of Pipe A , B and C are in the ratio of 2 : 3 : 1. Pipe A and Pipe B are the inlet pipes whereas Pipe C is the outlet pipe. Find out the time taken by A and C together to fill the tank?
(a) 240 min
(b) 280 min
(c) 300 min
(d) 320 min
(e) 360 min
Q8. Pipe A and Pipe B can fill a tank in 12 hrs. and 18 hrs. respectively. If both pipes are opened simultaneously, after how much time A should be closed so that the tank will be full in 10.5 hrs?
(a) 5 hrs.
(b) 6 hrs.
(c) 7 hrs.
(d) 4 hrs.
(e) 3 hrs.
Q9. How many kg of rice worth Rs.40 per kg must be mixed with 50 kg of rice worth Rs. 45 per kg, so that on selling the mixer at Rs. 49. There are 50/3% profit on selling it?
(a) 50 kg
(b) 60 kg
(c) 40 kg
(d) 75 kg
(e) 35 kg
Q10. The efficiency of Pipe A to fill a tank is 50% more than that of Pipe B. If both Pipes A and B together can fill the tank in 9.6 hrs, then find out the time taken by pipe A to fill the tank?
(a) 24 hrs.
(b) 12 hrs.
(c) 14 hrs.
(d) 16 hrs.
(e) 36 hrs.
Directions (11–15): What approximate value will come in place of (?) in the following problems?
RBI Assistant 2019 | Ratio and Proportion | Quant Class for RBI Assistant Pre Preparation 2019
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