1.The ratio of water and milk in a 30 litre mixture is 7 : 3, find the quantity of water to be added to the mixture in order to make this ratio 6 : 1.
Ans:c) 33
2.Three jackals Paar, Marr and Taar together have 675 loaves of bread. Paar has got three times as much as Maar but 25 loaves more than Taar. How many does Taar have?
Ans: b)275
3.If two numbers are in the ratio of 5 : 8 and if 9 be added to each, the ratio becomes 8 : 11. Now find the lower number.
ANs:c) 15
4.The ratio of the age of a man and his wife is 4 : 3. After 4 years, this ratio will be 9 : 7. If at the time of the marriage, the ratio was 5: 3, then how many years ago they were married?
ANS: b) 8 years
5.Two litres of a mixture of wine and water contain 12% water. They are added to 3 litres of another mixture containing 7% water, and half a litre of water is then added to whole. What is the percentage of water in resulting concoction?
ANs:a) 17(2/11)%
6.The speeds of three cars are in the ratio 2 : 3 : 4. The ratio between the times taken by these cars to travel the same distance is
Ans: d) 6:4:3
7.A milkman mixes 20 L of water with 80 L of milk. After selling one-fourth of this mixture, he adds water to replenish the quantity that he has sold. What is the current proportion of water to milk?
Ans: A) 2:3
8.A cat takes 5 leaps for every 4 leaps of a dog, but 3 leaps of the dog are equal to 4 leaps of the cat. What is the ratio of the speed of the cat to that of the dog?
Ans: d)15:16
9.20 litres of milk when added to a 60 litre mixture of milk and water ,the concentration increases by same percentage points as decreased by addition of 30 litres of water to the same solution.What is the ratio of milk and water initially?
ANs: b) 2:!
10.Two groups of student, whose average ages are 20 years and 30 years, combine to form a third group whose average age is 23 years. What is the ratio of the number of students in the first group to the number of students in the second group?
Ans: d) none of these
11.Three qualities of milk costing Rs 3, Rs 3.25 and Rs 2.60 per litre are mixed and the mixture is then sold at Rs 3.54 per litre to earn a profit of 20%. In what proportion should the three qualities of milk be mixed?
Ans: c) 1:1:1
12.A precious stone weighing 35 grams worth Rs. 12,250 is accidentally dropped and gets broken into two pieces having weights in the ratio of 2 : 5. If the price varies as the square of the weight then find the loss incurred.
ANs:Rs:5000
13.If three numbers are in the ratio of 1 : 2 : 3 and half the sum is 18, then the ratio of squares of the numbers is:
Ans:c) 36:144:324
14.The weights of three lumps of metal are in the ratio 3 : 4 : 5. By what fractions of themselves must the first two be increased so that the ratio of the weights may be changed to 5 : 4 : 3?
Ans:b) 3/4 , ,4/3
15.Total salary of A, B & C is Rs.350. If they spend 75%,80% & 56% of their salaries respectively their savings are as 10:12:33. Find C's salary.
Ans: b) 160
16.A cask contains 12 gallons of mixture of wine and water in the ratio 3 : 1. How much of the mixture must be drawn off and water substituted, so that wine and water in the cask may become half and half.
Ans: c) 6 gallons
17.The ages of A and B are in the ratio of 6 : 5 and sum of their ages is 44 years. The ratio of their ages after 8 years will be
Ans:d) 8:7
18.A dishonest milkman mixed 1 litre of water for every 3 litres of milk and thus made up 36 litres of milk. If he now adds 15 litres of milk to the mixture, find the ratio of milk and water in the new mixture.
Ans: b) 14:3
19.Vijay has coins of the denomination of Re.1, 50 p and 25 p in the ratio of 12 : 10 : 7. The total worth of the coins he has is Rs.75. Find the number of 25 p coins that Vijay has.
Ans: d) not
20.Four numbers in the ratio 1: 3 : 4 : 7 add up to give a sum of 105. find the value of the biggest number.
Ans: c) 49
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