Skip to main content

Aptitude Day 157

Problems on Average:

 1. The average of 5 consecutive numbers is 15. The largest of these numbers is:

Solution:
                 [x+(x+1)+(x+2)+(x+3)+(x+4)]/ 5 = 15
                 5x + 10 = 75
                 x = 13.

                 The largest number is x+4 = 17.

2. The average of 3 consecutive odd numbers is 9. What’s the difference between the highest and lowest numbers?

Solution:
                 [x+(x+2)+(x+4)]/ 3 = 9
                 3x+9 = 27
                 x =7.

               The difference between the highest and lowest numbers = (x+4)-x
                                                                                                         = (7+4)-7
                                                                                                         = 4.


Comments

Post a Comment

Popular posts from this blog

Aptitude Day 5

Answers of Day 4 :   1. 9                                   2. 5                                   3. 9                                   4. 8 To find the unit digit in the product. This is similar to the last model where we will find the unit digit of the sum. Example: 432*459*28*48=? Solution:  2*9=18 , 8*8=64, 4*8= 32. The unit digit of the total product is 2.  Problems to solve Find the unit digit of the product in the following 1. 404*397*810*21 =? 2. 24*42*36*78 =? 3. 81*82*89 =? 4. 72*36*98*47 =? See you tomorrow friends... Check out the answers over here  Aptitude Day 6
Post a Comment
Read more

Aptitude Day 59

Answers of Day 58:     1. 1/90.     2. 20 Problems to solve: 1. The product of two numbers is 33 and the sum of their squares is 130. Find their difference. 2. The sum of two numbers is 100 and their difference is 20. Find their product.
Post a Comment
Read more

Vocabulary Day 55

Dilemma Thesaurus: Noun : problem            double bind, difficulty, crisis, embarrassment, mess, puzzle...  Antonyms :  solution...  Example sentences:                  That's a serious dilemma we should think about that.          He'll never share his dilemma with anyone. 
Post a Comment
Read more