The average of three numbers is 19 while the average of two of these numbers is 21.25. What is the value of the third number?
Question and options
The average of three numbers is 19 while the average of two of these numbers is 21.25. What is the value of the third number?
- 15.5
- 14.5
- 13.5
- 12.5
Answer and explanation
Correct answer: B - 14.5
The three numbers add up to 3 x 19 = 57, and the two numbers add up to 2 x 21.25 = 42.5. The third number is 57 - 42.5 = 14.5.
Practice for these exams
-
IIM Bangalore BBA DBE Entrance Test
Related question papers
Related exam syllabi
More solved explanations in Arithmetic
- Two pipes, A and B can fill a tank in 20 and 30 minutes respectively. If both the pipes are used together, how long will it take to fill the tank?
- In a school of 500 students, 102 students can read Hindi and Tamil both, 200 students can read only Hindi. The students who can read only Tamil are (assume every…
- A vendor bought a number of bananas at 3 for a rupee and an equal number at 2 for a rupee. At what price should he sell a dozen in order to gain 20%?
- The sum of two numbers is 240. If the numbers are in the ratio 3 : 5, then the sum of their LCM and HCF is :
- How many numbers between 200 and 600 (excluding 600) are divisible by 4, 5 and 6?