EASY

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$45$ men can finish a task in $16$ days. After $6$ days, $30$ more men join them. How many days, will they all, now take to complete the remaining task?

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Important Questions on Time and Work

EASY

Mathematics>Arithmetic>Time and Work>Problems on Time and Work

Ratio of days required by A and B to complete some work is

3 : 5

. They require

5 \frac{5}{8}

days to complete the work. In how many days can A alone complete twice the work?

MEDIUM

Mathematics>Arithmetic>Time and Work>Problems on Time and Work

10

persons can build a wall in

8

days. How may persons can build the wall in half day ?

EASY

Mathematics>Arithmetic>Time and Work>Problems on Time and Work

20

dogs can eat

20

hens in

10

days. In how many days

40

dogs eat

40

such hens?

EASY

Mathematics>Arithmetic>Time and Work>Problems on Time and Work

Working

9

hours a day, Manish can read a book in

16

days. How many hours a day should he work so as to finish the same work in

24

days?

HARD

Mathematics>Arithmetic>Time and Work>Problems on Time and Work

A

and

B

can do a job together in

12

days.

A

2

times as efficient as

B

. In how many days can

B

alone complete the work?

MEDIUM

Mathematics>Arithmetic>Time and Work>Problems on Time and Work

A,B, and C together complete a work in 2 days. If A and B need 2.4 days to complete the work, while B and C together complete the work in 4 days then in how many days will B alone do the work?

EASY

Mathematics>Arithmetic>Time and Work>Problems on Time and Work

Deepa and Seema together do a work in

6

days. Deepa can complete the same work alone in

9

days. In how many days will Seema complete the work alone ?

EASY

Mathematics>Arithmetic>Time and Work>Problems on Time and Work

X

can complete a work in

27

days, and

Y

can do the same work in half of the time taken by

X

. They are working together, what part of the same work they can complete in a day?

EASY

Mathematics>Arithmetic>Time and Work>Problems on Time and Work

Ten people can do a work in $30$ days. In how many days, can 15 people complete double the work -

1. $40$

2. $25$

3. $20$

4. $45$

EASY

Mathematics>Arithmetic>Time and Work>Problems on Time and Work

G is twice as fast as S in doing work. If G can do a work in $30$ days less than S, how many days will they take to complete the work together?

1. $25$
2. $20$
3. $22$
4. $15$

EASY

Mathematics>Arithmetic>Time and Work>Problems on Time and Work

X

and

Y

can complete a work in

5

days.

Y

and

Z

can complete the same work in

6

days.

Z

and

X

can complete the same work in

\frac{15}{2}

days. In How many days will

X, Y

and

Z

toogether complete the work?

MEDIUM

Mathematics>Arithmetic>Time and Work>Problems on Time and Work

A group of soldiers can completely destroy an enemy camp in

5

days. However,

9

soldiers were injured. The remaining soldiers destroyed the camp in

8

days. Calculate the actual number of soldiers who destroyed the camp?

HARD

Mathematics>Arithmetic>Time and Work>Problems on Time and Work

Indira and Chandra can do a task separately in

20

days and

80

days respectively. Indra begins the work and works for

3

days and then takes a leave for five days during those days Chandra works. This process continues till the end of the work. How many days are taken to complete the work?

EASY

Mathematics>Arithmetic>Time and Work>Problems on Time and Work

A

works twice as fast as

B

. If

B

can complete a piece of work independently in

12

days, then what will be the number of days taken by

A

and

B

together to finish the work?

MEDIUM

Mathematics>Arithmetic>Time and Work>Problems on Time and Work

9800 J

of energy was spent to raise a mass of

70 kg

. The mass was raised to a height of _____?

EASY

Mathematics>Arithmetic>Time and Work>Problems on Time and Work

5 men take 20 days to complete a task. They work 8 hours per day. 8 men work for 7 hours a day, then in how many days will they finish the task?

HARD

Mathematics>Arithmetic>Time and Work>Problems on Time and Work

X

can complete

{\frac{5}{7}}^{t h}

part of a work in

10

days and

Y

can complete

{\frac{3}{4}}^{t h}

part of the same work in

9

days. In how many days will both complete

{\frac{13}{21}}^{s t}

part of the total work?

MEDIUM

Mathematics>Arithmetic>Time and Work>Problems on Time and Work

A and B can complete a piece of work in

6

and

12

days separately. If they work jointly, how long will they take to complete this piece of work ?

EASY

Mathematics>Arithmetic>Time and Work>Problems on Time and Work

A

is twice as good a workman as

B

and together, they finish a piece of work in

14

days. The number of days taken by

A

alone to finish the work is:

MEDIUM

Mathematics>Arithmetic>Time and Work>Problems on Time and Work

A person

X

is running around a circular track completing one round every

40

seconds. Another person

Y

running in the opposite direction meets

X

every

15

seconds. The time, expressed in seconds, taken by

Y

to complete one round is

45 men can finish a task in 16 days. After 6 days, 30 more men join them. How many days, will they all, now take to complete the remaining task?

Important Questions on Time and Work

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$45$ men can finish a task in $16$ days. After $6$ days, $30$ more men join them. How many days, will they all, now take to complete the remaining task?