Math Quiz Questions with Answers
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The radii of two right circular cylinders are in the ratio 3:2 and the ratio of their volumes is 27: 16. What is the ratio of their heights?
(A) 8:9
(B) 3:4
(C) 4:3
(D) 9:8
Correct Answer : B
The monthly incomes of A and B are in the ratio 3 : 5 and the ratio of their savings is 2: 3. If the income of B is equal to three times the savings of A, then what is the ratio of the expenditures of A and B?
(A) 5:8
(B) 8:15
(C) 3:7
(D) 7:11
Correct Answer : B
A jar contains a mixture of 2 liquids A and B in the ratio 4:1. When 10litres of the mixture is taken out and 10 litres of liquid B is poured into the jar, the ratio becomes 2:3. How many litres of the liquid A was contained in the jar?
(A) 17 litres
(B) 16 litres
(C) 18 litres
(D) 15 litres
Correct Answer : B
A person divided a certain sum between his three sons in the ratio 3:4: 5. Had he divided the sum in $${1\over 3}:{1\over 4}:{1\over 5}$$ the ratio: the son, who got the least share earlier, would have got ₹1,188 more. The sum (in) was:
(A) 6,768
(B) 5,640
(C) 7,008
(D) 6,840
Correct Answer : A
Two numbers are in the ratio 3:5. If 12 is added to both the numbers, then the ratio becomes 5:7. The sum of the given two numbers is
(A) 32
(B) 40
(C) 48
(D) 56
Correct Answer : B
The ratio of marks obtained by Rajesh, Rakesh and Ramesh in an exam is 2 : 4 : 9. What are the marks obtained by Rakesh and Ramesh, if Rajesh scored 30 marks in the exam?
(A) Rakesh = 40, Ramesh = 90
(B) Rakesh = 60, Ramesh = 135
(C) Rakesh = 120, Ramesh = 180
(D) Rakesh = 90, Ramesh = 40
Correct Answer : B
The ratio of the number of coins of 25 paise, 50 paise, Rs.2 and Rs.5 is 5 ∶ 4 ∶ 3 ∶ 1, respectively. If the total amount of the coins is Rs.285, then the difference between the number of 25 paise and Rs.5 coins is:
(A) 80
(B) 30
(C) 40
(D) 60
Correct Answer : A
A, B and C invested capital in the ratio of 3 : 4 : 8. At the end of the business term, they received the profit in the ratio of 2 : 3 : 5. What is the ratio of their invested time?
(A) 15 : 16 : 13
(B) 13 : 18 : 15
(C) 16 : 18 : 15
(D) 16 : 21 : 18
Correct Answer : C
The ratio of the incomes of two employees is 7 : 4, and the ratio of their expenditures is 3 : 1. If each of them manages to save ₹4,800 per month, find the sum of their monthly incomes (in ₹).
(A) 21120
(B) 20120
(C) 21150
(D) 18150
Correct Answer : A
A, B and C did certain investments and the ratio of their time periods is 3 : 2 : 7respectively. Ratio of the profits of A, B and C is 4 : 3 : 14 respectively. What is the ratio of the investments of A, B and C?
(A) 1:3:4
(B) 7:9:11
(C) 8:9:12
(D) 2:3:11
Correct Answer : C