1 / 12

Average questions and answers

For more details go through the website<br>http://www.mydearstudent.com/aptitude<br>

Download Presentation

Average questions and answers

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. AVERAGE AVERAGE QUESTIONS AND QUESTIONS AND ANSWERS ANSWERS

  2. 1) 20 pens and 55 pencils were purchased for  Rs.600.If the average price of a pencil was Rs.2 ,  find the average price of a pen ? Explanation: Since average price of a pencil = Rs. 2 Therefore Price of 55 pencils = Rs.110 ,  Price of  20 pens =600-110 = 490 average price of a pen = 490/20 =24.5  Ans: 24.5

  3. 2) A man walks 2500 metres in 40 minutes , 1000  metres in 30 minutes and 500 metres in 10 minutes.  Then what is the average speed for whole walking  distance ? Explanation: Average marks = (2500+1000+500) / (40+30+10) =  4000 / 80 = 50 Ans : 50

  4. 3) Anil travels to a place 200 km away at an average 3) Anil travels to a place 200 km away at an average  speed of 70 km/hr and returns at 32 km/hr. Find the  average speed for whole journey in km/hr ? Explanation: Average speed = 2xy/ x+y . Average speed of given problem = (2*70*32) / 70+32 (140 *32) /102 = 4480/102  = 43.92 Average speed of given problem  =43.92. Ans: 43.92.

  5. 4) Find the  average of cubes of consecutive 10 natural 4) Find the  average of cubes of consecutive 10 natural  numbers ? Explanation: 10(10+1)² / 4 = (110)²/4 = 12100 /4 = 3025   Average of cubes of consecutive n natural numbers=  n(n+1)² / 4. Ans: 3025

  6. 5) Find the arithmetic mean of  3 , 5 , 7 , 8 , 13 , 17 ,22 5) Find the arithmetic mean of  3 , 5 , 7 , 8 , 13 , 17 ,22   and  x. Mean is 10 ,what should be the number in  place of x ? Explanation: Mean or average = (3+5+7+8+13+17+22+x) / 8 =10  -- --->  (75 +x) /8 =10   -------> x = 80 -75 = 5. Ans: 5

  7. 6) Find the average of all the numbers between 5 to 25 6) Find the average of all the numbers between 5 to 25  , which are divisible by 3 ? Explanation: Average = ( 6+9+12+15+18+21+24) / 7 = 105 / 7 =15. Ans: 15

  8. 7) Find the average of consecutive 25 natural numbers 7) Find the average of consecutive 25 natural numbers  ? Explanation : (25+1) / 2 = 26/2 = 13 Average of consecutive n natural numbers = (n+1)/2 Ans: 13

  9. 8) Find the average of consecutive even  numbers to 8) Find the average of consecutive even  numbers to  80 ? Explanation : Average = ((N/2)+1)                =(80/2)+1 = 40+1 = 41. Ans : 41

  10. 9) Find the average of consecutive natural numbers  from 20 to 80 ? Explanation : Average = (1st number + last number) / 2. So Average of given numbers = (20+80) / 2  =100/2  =50. Ans : 50

  11. 10) Find the Average of first  50 naturals numbers ?10) Find the Average of first  50 naturals numbers ? Explanation : Sum of first n natural numbers = n(n+1)/2. So  (50*51)/2 =1275 ,   There fore Required average =  1275/50 = 25.5 Ans: 25.5

  12. • For more details go through the website • http://www.mydearstudent.com/aptitude

More Related