Ratio & Proportion Questions Answers – Quantitative Aptitude MCQ
1) Find the third Proportional to the numbers 5 and 10.
a) 20
b) 2.5
c) 25
d) 30
2) Ratio of the earnings of A and B is 4 : 7. If the earnings of A increases by 50% and those of B decreases by 25% , the new ratio of their earnings becomes 8 : 7. What are A’s earnings?
a) Rs 21,000
b) Rs 26,000
c) Rs 28,000
d) Data inadequate
3) Ratio of boys to the girls in a class is 5 : 4. Which of the following cannot be the number of students in the class ?
a) 45
b) 72
c) 108
d) 98
4) The third proportional to 0.36 and 0.48 is :
a) 0.1728
b) 0.64
c) 0.42
d) 0.94
5) What should be subtracted from each of the numbers 54,71,75 and 99, so that the remainders are in continued proportion?
a) 9
b) 7
c) 4
d) 3
6) If 40% of a number is equal to two-third of another number, what is the ratio of first number to the second number ?
a) 2 : 5
b) 3 : 7
c) 5 : 3
d) 7 : 3
7) The ratio of sprit and water in a mixture is 1 : 3. If the volume of the solution is increased by 25% by adding spirit only. What is the resultant ratio of spirit and water ?
a) 2 : 3
b) 1 : 4
c) 1 : 2
d) None of these
8) Rs. 120 are divided among A, B,C such that A’s share is Rs. 20 more than B’s and Rs.20 less than C’s. What is B’s share
a) Rs 10
b) Rs 20
c) Rs 24
d) Rs 28
9) Two numbers are in the ratio 3 : 5. If each number is increased by 10, the ratio becomes 5 : 7 the numbers are
a) 3,5
b) 7,9
c) 13,22
d) 15,25
10) Two Numbers are respectively 20% and 50% more than a third number. The ratio of the two numbers is :
a) 2 : 5
b) 3 : 5
c) 4 : 5
d) 6 : 7
11) A mixture of 729 mL contains milk and water in the ratio 7 : 2. How much more water is added to get a new mixture containing milk and water in the ratio 7 : 3 ?
a) 81 mL
b) 72 mL
c) 80 mL
d) 78 Ml
12) If there are Rs 495 in a bag in denominations of one-rupee, 50 paisa and 25 paisa couns, which are in the ratio 1 : 8 : 16. How many 50 paisa coins are there in the bag ?
a) 50
b) 220
c) 440
d) None of these
13) Divide 170 into three parts such that the first part is 10 more than the second and its ratio with third part is 2 : 5.
a) 22 : 35 : 113
b) 35 : 55 : 80
c) 40 : 30 : 100
d) 35 : 65 : 70
14) The ratio of money with Ram and Rahul is 7 : 17 and that with Rahul and Ajay is 7 : 17. If Ram has Rs 490, Ajay has
a) Rs 2890
b) Rs 2330
c) Rs 1190
d) Rs 2680
15) A bag contains an equal number of one rupee, 50 paisa and 25 paisa coins respectively. If the total value is Rs 35, how many coins of each type are there ?
a) 20
b) 16
c) 18
d) 25
16) The monthly salary of A,B,C are in the ratio of 2 : 3 : 5 If C’s monthly salary is Rs 1200 more than that of A, then B’s annual salary is
a) Rs 14400
b) Rs Rs 24000
c) Rs 1200
d) Rs 2000
17) A dog pursues a cat and takes 5 leaps for every 6 leaps of the cat, but 4 leaps of the dog are equal to 5 leaps of the cat. Compare the speeds of the dog and the cat.
a) 15 : 22
b) 9 : 25
c) 25 : 21
d) 25 : 24
18) The ratio of the ages of A and B is 5 : 7 If the difference between the present age of B and that of A,6 yr hence is 2, then what is the total of present ages of A and B ?
a) 48 yr
b) 52 yr
c) 56 yr
d) None of these
19) Gold is 19 times as heavy as water and copper 9 times as heavy as water. In what ratio should these metals be mixed so that the mixture may be 15 times as heavy as water ?
a) 2 : 5
b) 2 : 3
c) 3 : 1
d) 3 : 2
20) A ratio equivalent to 3 : 7 is :
a) 3 : 9
b) 6 : 10
c) 9 : 21
d) 18 : 49