IMPROVING YOUR INTELLIGECE

    Most of the psychologists define Intelligence as the ability to understand and acquire things. It is power of reasoning to similar forms of mental activities. the psychologists have introduced the term called intelligence quotient. Intelligence quotient is equal to mental age divided by to chronological age. In order to measure the intelligence quotient of a person, he should take up series of tests such as verbal and non verbal.

source:google image

To help you then, I have this short test exercise for you to increase your intelligence.

LET US START:

These challenges have different situations. Solve these challenges by necessary solutions.

1) A father's age is twice his son's age . Ten years  ago he was thrice as his son. Find their present ages.

(Write your answer on your paper)

2)10 men can dig 20 holes in 40 days. 20 men can dig 10 holes in how many days?

(Write your answer on your paper)

3) If a train is running 4 minutes late and losing 4 seconds per minute, how many more minutes will it take for the train to be running half an hour late?

(Write your answer on your paper)

source: google image

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After you have honestly answered these challenges, I have provided for you the answers. Take  study and try again using these as guide on how do these are solved. You can possibly encounter these questions.


Answers: 

1) Father is 40 years old and son  is 20 years old.
How?
- Suppose the age of father is = x years
-Suppose the age of the son is = y years
 According to the situation of the problem:


 (i)                          x=2y
  (ii)               x - 10 = 3 (y-10)
  (iii)               x- 10 = 3y - 30

Substitute the value of x from equation No. (i) in equation No. (ii) remember, x=2y

               2y - 10 = 3y - 30
                      20 = y there for son is 20 years old.
   x = 2y
    x  = 2 x20
       x= 40 ther for father is 40 years old.

2) 10 days

Time taken by 10 men to dig 20 holes
      = 40 days.
Time taken by 10 men to dig 1 hole
    =           40     days
                 20      holes
Time taken by 1 man to dig 1 hole

  =          40 x 10    days
                   20       holes
Time taken by 1 man to dig 20 holes
 =         40 x 10 x 10   days
                     20           holes
Time taken by 20 men to dig 10 holes
 =       40 x 10 x 10   days
                20 x 20     holes
= 10 days.

3)  Answer :390 minutes

to lose 4 seconds train has to run 
  = 1 minute
To lose 1 minute train has to run
= 15 minutes
To lose 26  minute train has to run 
 = 26 x 15 minutes

= 390 minutes

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