Important Time and Work Problem Shortcut Tricks Bank SSC Railway Exam Type-1

Last updated on May 12th, 2018 at 02:12 pm

Time and Work Problem Shortcut Tricks for Bank PO SSC Railway Exam

In Quantitive aptitude, Time And Work are one of the most important topics. It Plays a major role in any competitive Examination like Bank PO, SSC CGL, SSC CHSL, Railways etc. Generally, 2-3 questions are expected any pre level Exam but In SSC CGL Tier-2, 5-6 Questions are expected from Time And work Chapter.

In Time And Work Type-1 I am going to discuss some important Time and Work Problem Shortcut Tricks which are frequently asked in Bank PO, SSC CGL, SSC CHSL, Railways etc Exam.

Trick-1: If A can do a certain work in x days and B can complete same work in y days if they work together then they will complete the work in

For Example:

(Q1)A can do a certain work in 10 days and B can complete same work in 15 days if they work together then in how many days works gets done.

Solution:

(A+B)’s 1 day work=3+2=5 unit

Time taken by (A+B)=30/5

= 6 days Ans.

Rough:[L.C.M of 10 and 15=30 now 30/10=3 unit and 30/15=2 unit]

BY TRICK:

Trick-2: If A, B, and C can do a certain work in x days, y days, and z days respectively. if they work together then they will complete the work in

For Example:

(Q1) Ram, Mohan, and Sita can do a work in 6, 12 and 24 days respectively. In what time will they finish the work while working together?

Solution:

(Ram+Mohan+Sita) 1 day work=4+2+1

=7 unit

Required Time=24/7=3 ³/7 Ans.

BY TRICK:

Trick-3: A and B together can do a work in x days, B and C together in y days, while C and A together in z days. If they all work together, the work will be completed in.

For Example:

(Q1)A and B together can do a work in 8 days, B and C together in 6 days, while C and A together in 10 days. If they all work together, the work will be completed in.

Solution:

(A+B)+(B+C)+(C+A) 1 day work=15+20+12=47 units

i.e 2(A+B+C)1 day work=47 units

∴ (A+B+C)1 day work=47/2 units

Time Taken by(A+B+C)=120/(47/2)

BY TRICK:

Common Type Of Time and Work Problem Shortcut Tricks That Are Frequently Asked In Various Competitive Exam

Trick-4: A and B together can do a piece of work in x days. If A alone can do it in y days, in how many days B can alone complete the same piece of work

For Example:

(Q1)A and B together can do a piece of work in 4 days. If A alone can do it in 6 days, in how many days B can alone complete the same piece of work?

Solution:

Time taken by B=12/1

= 12 Days Ans.

By Trick:

(Q2)A man can do a piece of work in 5 days, but with the help of his son he can do it in 3 days. In what time can the son do it alone?

Solution:

Time taken by son alone=15/2

=7.5 Days Ans.

By Trick:

(Q3)A can do a piece of work in 16 days and B can do the same piece of work in 12 days. With the help of C, they did in 4 days only. Then, C alone can do the job in?

Solution:

Time taken by C=48/5 days Ans.

Common Type Of Time and Work Problem Shortcut Tricks That Are Frequently Asked In Various Competitive Exam

Trick-5: If A and B together can complete a piece of work in x days; B and C together in y days; and C and A together in z days. How many days will each take separately to complete the same work?

(Q1)A and B together can complete a piece of work in 24 days; B and C together in 30 days; and C and A together in 40 days. How many days will each take separately to complete the same work?

Solution:

(A+B)+(B+C)+(C+A) 1 day work=5+4+3=12 units

i.e 2(A+B+C)1 day work=12 units

∴ (A+B+C)1 day work=12/2 units

=6 units.

Efficiency of A=(A+B+C)-(B+C)

=6 Units – 4 Units

=2 Units

Efficiency of B=(A+B+C)-(C+A)

=6 Units – 3 Units

=3 Units

Efficiency of C=(A+B+C)-(A+B)

=6 Units – 5 Units

=1 Units

Time taken by A=120/2

=60 Days

Time taken by B=120/3

=40 Days

Time taken by A=120/1

=120 Days

BY TRICK:

(Q2)A and B can do a given piece of work in 8 days, B and C can do the same work in 12 days and A, B, C complete it in 6 days. Number of days required to finish the work by A and C is.

Solution:

Efficiency of A=(A+B+C)-(B+C)

=4 Units – 2 Units

=2 Units

Efficiency of C=(A+B+C)-(A+B)

=4 Units – 3 Units

=1 Units

(A+C)’s 1 day work=2+1=3 unit

Time taken by( A+C)=24/3

=8 days Ans.

I have already shared a Profit and Loss Problem Shortcut Tricks, Basic concept and frequently asked question if you have not read that yet, you should read it the right way here is the link.

Profit and Loss Problem Shortcut Tricks Type-1

If you have any queries regarding this topic fell free to ask me in the comments below.

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