Necessary for Entrance Exams like:

CAT, MBA Bank PO Insurance – LIC, GIC Hotel management Railway Air Force Campus Recruitment and many more…

SPEED

ACCURACY

The basic problem of students that they are unable to complete the number of problems

IN TIME.

Quantitative Aptitude

Example

The age of the father 3 yrs ago was 7 times the age of his son. At present the father’s age is five times that of his son. What are the present ages of the father and the son?

Solution

Let the present age of the son=x yrs the present age of the father=5x yrs 3yrs ago

Son’s age=(x-3)yrsFather’s age=(5x-3)

7(x-3)=5x-37x-21=5x-3x=9

So, Present age of Son=9 yrs Present age of Father=5*9=45 yrs

Example

957

)17(3

years Son’s age =

The age of father 3 yrs ago was 7 times the age of his son . At present the father’s age is five times that of his son. What are the present ages of the son?

Quicker Method

Son’s Age = yx1)T1(x

Solution

So, Present age of Son=9 yrs Present age of Father=5*9=45 yrs

Example

A sum of money doubles itself in 10 years at S.I.What is the rate of interest?

Solution

Let the sum be Rs x.

After 10 years it becomes Rs 2x

Interest = Rs 2x – Rs x = Rs x

Rate = tP

I

100

10

100

x

x

=10%

Example

A sum of money doubles itself in 10 years at S.I.What is the rate of interest?

Solution

Quicker Method

Time * Rate = 100 (Multiple number of Principal-1)

100 (Multiple number of Principal-1)

TimeRate =

%)(

1010

100

10

12100

Example

A sum of money doubles itself in 7 years. In how many years will it become four fold?

Quicker Method

Double in 7 years.

Trebles in 14 years.

4 times in 21 years.

5 times in 28 years.

ExampleWhen A person covers the distance between his house and office at 50 km/hr, He is late by 20 min. But when he travels at 60km/hr, he reaches 10 min early. What is the difference between his house and office?

Let the distance be x km.

Time taken to cover x km at speed 50km/hr=

Time taken to cover x km at speed 60km/hr=

Difference between time taken=30 min

60

30

6050

xx

2

1

300

56

xx

kmx 150

hrsx

50

hrsx

60

Solution

ExampleWhen A person covers the distance between his house and office at 50 km/hr, He is late by 20 min. But when he travels at 60km/hr, he reaches 10 min early. What is the difference between his house and office?

Quicker Method

Reqd. Distance = xProd. Of two speedsDiff. of two speeds

Difference between arrival time

Solution

60

30

5060

6050

= 150km

Reqd. Distance

Such type of Quicker Methods saves lots of time in solving the problems.

One can complete the test IN TIME and with higher degree of ACCURACY.

Quantitative Aptitude

Quantitative AptitudeDo you want such type of material?

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• It contains 30 Chapters.

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• Contains problems with full explanation as well as Quicker Methods.

•Contains Thousands of Problems.

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