NIACL Model Paper 5 with solutions for free online practice

Question : 21 of 100

Marks: +1, -0

Number of students studying in colleges A and B are in the ratio of 3 : 4 respectively. If 50 more students join college and there is no change in the number of students in college B, the respective ratio becomes 5:6. What is the number of students in college B?

450
500
400
600
None of these

Validate

Solution:

(d) Let total number of students in college A = 3x
and total number of students in college B = 4x
After 50 more students join college A
New Ratio

={ 3x+50}/{4x}=5/6

⇒

18x + 300 = 20x

⇒

2x=300

x=300/2=150

Total number of students in college
B

= 4x = 4×150 = 600

Go to Question:

Prev Question

Next Question