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Average of five numbers is 27. If one number is excluded the average becomes 25. The excluded number is

  • 35
  • 45
  • 55
  • 65

Answer: Option A

Explanation:

Number is (5*27) - (4*25) = 135-100 = 35

Similar Questions :

1. The average of four consecutive odd numbers is 24. Find the largest number.

  • 25
  • 27
  • 29
  • 31

Answer: Option B

Explanation:

Let the numbers are x, x+2, x+4, x+6, then
=>x+(x+2)+(x+4)+(x+6)4=24



=>4x+12)4=24


=>x+3=24=>x=21


So largest number is 21 + 6 = 27

2. A motorist travel to a place 150 km away at an avearge speed of 50 km/hr and returns ar 30 km/hr.His average speed for the whole jouney in km/hr is

  • 36.5 km/hr
  • 37.5 km/hr
  • 35.5 km/hr
  • 34.5 km/hr

Answer: Option B

Explanation:

Average speed will be

2xyx+ykm/hr=2(50)(30)50+30km/hr



= 37.5 km/hr

3. Average of five numbers is 27. If one number is excluded the average becomes 25. The excluded number is

  • 35
  • 45
  • 55
  • 65

Answer: Option A

Explanation:

Number is (5*27) - (4*25) = 135-100 = 35

4. Average age of boys in a class is 16 years and average age of girls is 15 years, what is the average age of all

  • 15.5
  • 15
  • 16
  • Cant be computed

Answer: Option D

Explanation:

As number of girls and boys is not given so result cant be computed

5. A batsman makes a score of 87 runs in the 17th match and thus increases his average by 3. Find his average after 17th match

  • 36
  • 37
  • 38
  • 39

Answer: Option D

Explanation:

Let the average after 17th match is x
then the average before 17th match is x-3

so 16(x-3) + 87 = 17x
=> x = 87 - 48 = 39

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