Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Numerical Ability

Topic

Average

Question:

The average monthly income of Rakesh and Suresh is Rs. 5050. The average monthly income of Suresh and Ramesh is Rs. 6250 and the average monthly income of Rakesh and Ramesh is Rs. 5200. What is the monthly income of Rakesh?

 

Options:

3000

4000

6000

2500

Correct Answer:

4000

Explanation:

Sum of monthly income of Rakesh and Suresh = 5050 x 2 = 10,100 -------1st equation

Sum of monthly income of Suresh and Ramesh = 6250 x 2 = 12,500-------2nd equation

Sum of monthly income of Rakesh and Ramesh = 5200 x 2 = 10,400-------3rd equation

Adding all three equations we get:

2(Sum of monthly income of Rakesh, Suresh and Ramesh) = 10,100 + 12,500 + 10,400

2(Sum of monthly income of Rakesh, Suresh and Ramesh) = 33,000

Sum of monthly income of Rakesh, Suresh and Ramesh = \(\frac{ 33,000}{2 }\)

Sum of monthly income of Rakesh, Suresh and Ramesh = 16,500

Monthly income of Rakesh = Sum of monthly income of Rakesh, Suresh and Ramesh - Sum of monthly income of Suresh and Ramesh

Monthly income of Rakesh = 16,500 - 12,500

Monthly income of Rakesh = 4,000