SSC CGL Time and Work Questions With Solutions & Tricks

Types Of SSC CGL Time and Work Questions

S.No

Question Type

Description

1

Work Efficiency Problems

Questions based on comparing the efficiency of two or more persons and finding who works faster or slower.

2

Combined Work Problems

Finding the total time required when two or more people work together on the same task.

3

Pipes and Cisterns

Application of the time & work concept where inlet pipes fill and outlet pipes empty a tank.

4

Work and Wages

Problems related to the distribution of wages in proportion to the amount of work done or efficiency.

5

Work Left / Remaining Work

Finding incomplete or pending work when workers leave, join, or work for partial time.

SSC CGL Time and Work Tricks

S.No

Formula / Concept

Expression

1

Time taken by A and B together (if A = m days, B = n days)

mnm+n\frac{mn}{m+n} days

2

Time taken by B alone (if A = m days, A & B together = n days)

mnm−n\frac{mn}{m-n} days

3

If A takes x days more and B takes y days more than A & B together

A & B together complete in xy\sqrt{xy} days

4

Work equivalence (Men, Work, Days, Hours relation)

M1D1H1W1=M2D2H2W2\frac{M_1D_1H_1}{W_1} = \frac{M_2D_2H_2}{W_2}

5

Ratio of wages (if A = m days, B = n days)

n:mn: m

SSC CGL Time and Work Practice Questions

Question

Options

Correct Answer

A can do a piece of work in 20 days and B in 30 days. In how many days can both of them complete the work?

(a) 12

 (b) 15

(c) 30

(d) 25

(a) 12

A, B and C can do a piece of work in 12, 15 and 20 days, respectively. Altogether, complete the work in how many days?

(a) 15

(b) 10

(c) 5

(d) 8

(c) 5

A and B can do a piece of work in 10 days and 15 days. Both started together, but after 4 days, A left. The rest of the work is done by B. In how many days is the whole work completed?

(a) 4

 (b) 5

 (c) 9

(d) 10

(c) 9

A, B and C can do a piece of work in 10, 15 and 30 days. It all started together, after 3 days A left, and after the next 3 days B left. The rest is done by C. In how many days is the whole work completed?

(a) 3

(b) 6

(c) 9

 (d) 12

(c) 9

A and B can do a piece of work in 20 and 30 days. Both started together, then A left after some days. The rest of the work was completed by B in 10 days. After how many days did A leave the work?

(a) 8

 (b) 5

(c) 3

(d) 4

(a) 8

A & B together can do a piece of work in 12 days, B & C in 15 days, and C & A in 20 days. Altogether, complete the work in how many days?

(a) 6

(b) 10

(c) 8

(d) 12

(b) 10

A alone can do a piece of work in 6 days, and B alone in 8 days. A and B undertook to do it for Rs. 3200. With the help of C, they finished in 3 days. How much is to be paid to C?

(a) 375

(b) 400

(c) 600

(d) 800

(b) 400

A, B & C can do a piece of work in 15, 20 & 30 days, respectively. If they work on alternate days, in how many days will the work be completed?

(a) 19

(b) 19 2/3

(c) 20

(d) 22

(b)19 2/3

A can do 2/3rd of the work in 10 days, while B can do 3/4th of the same work in 15 days. In how many days will they finish 3/5th of the work together?

(a) 5 1/7

 (b) 6 1/7

(c) 9 1/7

(d) 8 1/7

(a) 5 1/7