Skip to main content

Aptitude Day 32


Problems on Numbers

1. A number is as much greater than 20 as is less than 66. Find the number.

Solution:
                  Let the number be x.
                  x-20 = 66-x   [As per the given condition]
                     2x = 86
                       x=43.
                  The number is 43.
             

2. Find the number such that 22 is subtracted from 6 times the number, the result is 2 more than twice the number.

Solution:
                  Let the number be x.
                  6x-22 = 2x+2  [Given condition]
                     4x = 24
                       x = 6.
                  The number is 6.

3. The sum of the rational number and its reciprocal is 13/6. Find the number.

Solution:
                  Let the number be x.
                  x+(1/x) =13/6
                  6(x2+1) = 13x
                   6x2+6=13x
                   6x2-13x+6=0
                  6x2-9x-4x+6=0
                  3x(2x-3)-2(2x-3)=0
                    (2x-3)(3x-2)=0
                       x =3/2, 2/3
                 The number is 3/2 or 2/3.
     
            

                

Comments

Post a Comment

Popular posts from this blog

Easy ways to dramatically improve your English

           Hello everyone. Let's get into the matter straightaway. Many of the people I know personally keep on asking me Is there any easy ways to improve my English? So I would like to share some of my own tips like how I improved my English in the easiest ways. I see a lot of people struggling in this. Despite being talented, they couldn't come front or couldn't express or reveal their talent to others due to their lack of communication skills. I'm not saying that you must know to converse in English in order to be successful in your life but it plays a vital role in it if you dream to go beyond your horizon. So what're you waiting for? Let's get started. Concentrate on your accent:            The very first step is to concentrate on your accent and not on the Grammar because even the native speakers won't speak with perfect Grammar. Ask yourself, "Are you speaking your regional language with th...
2 comments
Read more

Aptitude Day 332

Answers of Day 331: 1. 450%.                                     2. 10.   Problems on Percentage: 1. 0.001 is what percent of 0.01? Solution:                   0.001/0.01 * 100 = 1/10* 100                                               = 10%. 2. A fruit seller had some apples. He sells 20% apples and still has 500 apples. Originally, he had: Solution:                (100-20)% of x = 500                80/100*x = 500                x = 625.
Post a Comment
Read more