There are two examinations rooms A and B. If 10 students are sent from A to B, t

Check All Courses

Question

There are two examinations rooms A and B. If 10 students are sent from A to B, then the number of students in each room is the same. If 20 candidates are sent from B to A, then the number of students in A is double the number of students in B. The number of students in room A is:

Options:

A . 20

B . 80

C . 100

D . 200

Answer: Option C

Let the number of students in rooms A and B be x and y respectively.

Then, x - 10 = y + 10 x - y = 20 .... (i)

and x + 20 = 2(y - 20) x - 2y = -60 .... (ii)

Solving (i) and (ii) we get: x = 100 , y = 80.

The required answer A = 100.

Was this answer helpful ?

Next Question

Submit Comment/FeedBack

More Questions on This Topic :

Question 1. If a - b = 3 and a2 + b2 = 29, find the value of ab.....

Question 2. The price of 2 sarees and 4 shirts is Rs. 1600. With the same money one can buy 1 saree and 6 shirts. If one wants to bu....12 shirts, how much shall he have to pay ?

Question 3. The price of 10 chairs is equal to that of 4 tables. The price of 15 chairs and 2 tables together is Rs. 4000. The total....The total price of 12 chairs and 3 tables is:

Question 4. In a regular week, there are 5 working days and for each day, the working hours are 8. A man gets Rs. 2.40 per hour for ....then how many hours does he work for ?

Question 5. A man has some hens and cows. If the number of heads be 48 and the number of feet equals 140, then the number of hens wi....feet equals 140, then the number of hens will be:

Question 6. Free notebooks were distributed equally among children of a class. The number of notebooks each child got was one-eighth....got 16 notebooks. Total how many notebooks were distributed ?

Question 7. (469 + 174)2 - (469 - 174)2 = ? (469 x 174) ....

Question 8. David gets on the elevator at the 11th floor of a building and rides up at the rate of 57 floors per minute. At the same....rates, then at which floor will their paths cross ?

Question 9. 6 - [5/6 + {3 7/8 - 2 1/3 + 1 7/9}] = ? ....

Question 10. 12.5 + 10 1/4 of 100 Ã· 10% of 10 = ? ....

Latest Videos

Chapter 1 - GLOBAL STEEL SCENARIO & INDI Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)

Direction Sense Test Part 1 Reasoning (Hindi)

Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE

Cube & Cuboid Part 1 Reasoning (Hindi)

Data Interpretation (DI) Basic Concept Reasoning (Hindi)

Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)

Sail E0 free webinar Webinars

Real Numbers Part 7 Class 10 Maths

Real Numbers Part 1 Class 10 Maths

Polynomials Part 1 Class 10 Maths

Latest Test Papers

Chapter 3.1 : Overview of Finance & Acco Chapter 3 : Finance & Accounts SAIL E0 - GFM 2024

Chapter 2.1 : Overview Chapter 2 : Materials Management SAIL E0 - GFM 2024

Chapter 1.1 : Personnel Functions- An ov Chapter 1 : Personnel Management SAIL E0 - GFM 2024

GPOE / GPA Combined 1 Free CBT Mock Test SAIL E0 2024

CBT Mixed Test 1 GPOE/GPA SAIL E0 2024