Topics

General Knowledge
General Science
General English
Aptitude
General Computer Science
General Intellingence and Reasoning
Current Affairs
Exams
Elementary Mathematics
English Literature

The ratio of the radii of the taps T1 and T2 is 2 : 1. Water flowing through them with the same velocity. What is the ratio of the time required to completely fill two identical drums kept under T1 and T2.

A) 2 : 1
B) 1 : 2
C) 4 : 1
D) 1 : 4

Correct Answer:




D) 1 : 4

Description for Correct answer:

Given \( r_{1} : r_{2} = 2 : 1\)

Since, time taken will be inversely proportional take square of radius of taps,
= \( \Large t_{1} : t_{2} = r_{2}^{2} : r_{1}^{2} \)

= 1 : 4

Part of solved Ratio and Proportions questions and answers : >> Aptitude >> Ratio and Proportions

Comments

Similar Questions

1). In a town, 80 % of the population are adults of which the men and women are in the ratio of 9 : 7, respectively. If the number of adult women is 4.2 lakh, what is the total population of the town?

A). 12 lakh

B). 9.6 lakh

C). 9.8 lakh

D). 11.6 lakh

2). Salaries of Akash, Bahu and Chintu are in the ratio of 2 : 3 : 5. If their salaries are increased by 15 % ,10% and 20% respectively, then what will be the new ratio of their salaries?

A). 3 : 3 : 10

B). 23 : 33 : 60

C). 20 : 22 : 40

D). None of these

3). 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 speeds of the cat to that of the dog?

A). 11 : 15

B). 15 : 11

C). 16 : 15

D). 15 : 16

4). A sum of money is to be divided equally among P, Q and R in the respective ratio of 5 : 6 : 7 and another sum of money is to be divided between S and T equally. If S got Rs. 2100 less than P, then how much amount did Q receive?

A). Rs. 2500

B). Rs. 2000

C). Rs. 1500

D). Could not be determined

5). Out of 120 applications for a post, 70 are males and 80 have a driver license. What is the ratio of between the minimum to maximum number of males having driver's license.

A). 1 : 2

B). 2 : 3

C). 3 : 7

D). 5 : 7

6). A man goes from Delhi to Dehradun. Half the distance he covers by bus at an average speed of 50 Km/hr and the other half by train at an average speed of 70 Km/hr the average speed for the whole journey was

A). 56 Km/hr

B). 64 Km/hr

C). 60 Km/hr

D). None of these

7). A person shooting at a target from a distance of 450 metres finds that the sound of the bullet hitting the target comes 1 / 2 seconds after he fired. A person equidistant from the target and shooting point hears the bullet hit 3 seconds after he heard the gun. The speed of sound is

A). 300 m/s

B). 350 m/s

C). 250 m/s

D). 400 m/s

8). A monkey climbs a slippery pole 12 m high. It rises 1 meter in every one minute and slips 1 /2 meter in every next minute. Find how soon it will reach the top?

A). 45 min

B). 40 min

C). 35 min

D). 48 min

9). A boy walks at 4 Km/hr and reaches his school 5 minutes late. Next day he walks at 5 Km/hr and start at the same time, reaches his school 10 minutes early. How far the school is from his house

A). 4 kms

B). 5 kms

C). 6 kms

D). 3 kms

10). A train starts from Delhi with a certain number of passengers. At Ghaziabad 110 get down and 100 get in. At Aligarh 50% get down and 25 get in. At Kanpur 5 of them get down and 50 get in. When train leaves Kanpur there are 200 passengers. How many did board the train at Delhi?

A). 300

B). 400

C). 270

D). 600