Please enter the following details
Free Daily Targets & Mocks
Study Material & Formulas PDFs
1 on 1 Mentorship
Question 89
The average of 50 numbers is X. If two numbers 53 and 47 are discarded, the average of the remaining set of numbers now is 37.5. What is the value of 50X?
Solution
Sum of 50 numbers = $$50x$$
After removing 53 and 47, average of 48 numbers = $$\frac{50x-53-47}{48}=37.5$$
=> $$50x-100=\frac{75}{2}\times48$$
=> $$50x=1800+100=1900$$
=> Ans - (B)
Video Solution
Create a FREE account and get:
- Download Maths Shortcuts PDF
- Get 300+ previous papers with solutions PDF
- 500+ Online Tests for Free
