# Time and Distance

## A train of length 384 metres crosses an electric pole in 12 seconds and crosses another train of the travelling in opposite direction in 12 seconds. What is the speed of the second train?

Questions : A train of length 384 metres crosses an electric pole in 12 seconds and crosses another train of the travelling in opposite direction in 12 seconds. What is the speed of the second train? 384 मीटर लंबी एक ट्रेन एक बिजली के खंभे को 12 सेकंड में पार करती है और विपरीत दिशा […]

## Swapnil can build a sofa in 16 days. Working together with Revathi he can finish the work in 129/17 days. Find the number of days taken by Revathi to complete the work if she works alone.

Question: Swapnil can build a sofa in 16 days. Working together with Revathi he can finish the work in 129/17 days. Find the number of days taken by Revathi to complete the work if she works alone. Answer: 4. 128/9 days Solution:building a sofa workdone = wSwapnil can do in 16 days = w=16ss=speed of

## If 72 binders can bind 720 books in 22 days, how many binders will be required to bind 660 books in 12 days?

Question: If 72 binders can bind 720 books in 22 days, how many binders will be required to bind 660 books in 12 days? Answer: 3. 121 Solution:workdone for 1 book= (binders x days) / n.o of books=( 22 x72)/720workdone for 660 books in 12 days for (1 book work)= (binders x 12) /660(binders x

## After working for 8 days. Rakhi finds that only 10 percent of the work is completed. She employs Poonam who is 20 percent more efficient than Rakhi. How many more days will they together take to complete the remaining work?

Quesion: After working for 8 days. Rakhi finds that only 10 percent of the work is completed. She employs Poonam who is 20 percent more efficient than Rakhi. How many more days will they together take to complete the remaining work? Answer: 4. 360/11 days Solution: Total work =wRakhi speed to complete work xpoonam speed

## Two trains are running in opposite direction with the same speed. If the length of each train is 320 meters and they cross each other in 18 seconds, then what is the speed of each train?

Question: Two trains are running in opposite direction with the same speed. If the length of each train is 320 meters and they cross each other in 18 seconds, then what is the speed of each train? Answer: 1. 64 km/hr Solution:Total distance covered by train =320 meterstotal time taken= 18 secondspeed of train(m/s)=640/18speed of