I want to give the Bank Clerk Exam and for that I want to get the short cut tricks for Bank Clerk Exam so can you provide me that as it is very urgent for me?

As you want to get the details of short cut tricks for Bank Clerk Exam so here is the information of the same for you:

Example 1
The age of a father 3 years ago was 7 times the age of his son. At present the age of son is five times the age of son. What are the present age of father and son ?

Solution:
Let the present age of son = x years
the present age of father = 5x years
3 years ago
sons age = x-3
Fathers age = 5x-3
7(x-3) = 5x-3
7x-21=5x-3
2x=18
x=9
So, Present age of son is 9 years and father is 5*9=45.
Shortcut
Sons Age = T1(x-1)/x-y= 3*(7-1)/(7-5) = 9

Example 2
A sum of money doubles itself in 10years at S.I . What is the rate of Interest.
Solution:
Let the sum be x
After 10 years it becomes 2x
Interest= Rs.2x- Rs.x =Rs.x
Rate = 100*l/P*T =100*x/x*10 = 10%
Shortcut :
Time*Rate = 100(Multiple Number of Principal Amount -1)
Rate= 100 (Multiple Number of Principal Amount-1 ) /Time

Example
A sum of money doubles itself in 7 years.In how many years will it become four fold?
shortcut :
Double in 7 years
Triple in 14 years
4 times in 21 years
5 times in 28 years

Example
When a person covers a 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 ?

Solution:
Let the distance be x km
Time taken to cover x km at 50km/hr is = x/50 hrs
Time taken to cover x km at 60km/hr is = x/60 hrs
Difference between time taken = 30 min
∴x/50-x/60 = 30/60
=> 6x-5x/300 = 1/2
=> x = 150 km

Shortcut:
Required Distance = Product of two speeds / Difference of two speeds * Difference between arrival time.