Question

. If 52 men can do a piece of work in 35 days, in how many days 28 men will do it?​

Answer 1

Answer:

1.Read the passage and answer the questions below-(Q.1-9) (9 Marks)

Airplanes have the reputation of being dangerous and even hardened travelers are intimidated by them. They also have the grave disadvantage of being the most expensive form of transport but nothing can match them for speed and comfort, travelling at a height of 30,000 feet, far above the clouds, and at over 500 miles an hour is an exhilarating experience. You do not have to devise ways of taking your mind off the journey, for an airplane gets you to your destination rapidly.

For a few hours, you settle back in a deep armchair to enjoy the flight. The real escapist can watch a free film show and sip a hot or cold drink on some services. But even when such refreshments are 1.Read the passage and answer the questions below-(Q.1-9) (9 Marks)

Airplanes have the reputation of being dangerous and even hardened travelers are intimidated by them. They also have the grave disadvantage of being the most expensive form of transport but nothing can match them for speed and comfort, travelling at a height of 30,000 feet, far above the clouds, and at over 500 miles an hour is an exhilarating experience. You do not have to devise ways of taking your mind off the journey, for an airplane gets you to your destination rapidly.

For a few hours, you settle back in a deep armchair to enjoy the flight. The real escapist can watch a free film show and sip a hot or cold drink on some services. But even when such refreshments are not available, there is plenty to keep you occupied. An airplane offers you an unusual breathtaking view of the world. You soar effortlessly over high mountains and deep valleys. You really see the shape of the land.

If the landscape is hidden from view, you can enjoy the extraordinary sight of unbroken clouds, plains that stretch out for miles before you while the sun shines brilliantly in a clear sky. The journey is so smooth that there is nothing to prevent you from reading or sleeping. However you decide to spend your time, one thing is certain: you will arrive at your destination fresh and uncrumpled. You will not have to spend the next few days recovering from a long and arduous journey.

1.The main disadvantage of an air journey is that:

(1 Point)not available, there is plenty to keep you occupied. An airplane offers you an unusual breathtaking view of the world. You soar effortlessly over high mountains and deep valleys. You really see the shape of the land.

 

1.The main disadvantage of an air journey is that:

(1 Point)

Step-by-step explanation:

Answer 2

Step-by-step explanation:

Work efficiency of 52 men

$= \frac{1}{35}$

work efficiency of 1 man

$\longrightarrow \frac{1}{35 \times 52}$

work efficiency of 28 man

$= \frac{28}{35 \times 52} = \frac{1}{65}$

So Number of days

$= \frac{1}{work efficiency} =65$

$\rightarrow \fcolorbox{green}{blue}{65days}$