Skip to main content

Aptitude Day 39


Problems on Numbers

 1. A number is doubled and 5 is added. If the resultant is tripled, it becomes 33. What's the number?

Solution:
                 Let the number be x.
                 3(2x+5) = 33
                    6x+15 = 33
                           6x=18
                             x=3.
                 The number is 3.

 2. When 18 is subtracted from a number, it reduces to its three-fifth. What's the sum of the digits of that number?

 Solution:
               Let the number be x.
               x-18=3/5(x)
               x-3/5(x) = 18
               5x-3x = 90
                     2x = 90
                       x = 45.
              The sum of the digits of the number is 4+5 = 9. 
                 
Problem to solve

 Three-fifth of a number is 25 more than the half of the number. What's the number?


Comments

Post a Comment

Popular posts from this blog

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

Vocabulary Day 21

Stammer Thesaurus: Verb : stutter in speech, speak haltingly, speech defect           halt, hesitate, pause, stop, sputter... Antonyms : say quickly, pronounce, enunciate... Example sentences: ·          He was stammering when the teacher caught him red-handed. ·          One should avoid the stammering while delivering a speech. 
Post a Comment
Read more