If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?

If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers? Correct Answer 6 hours 40 minutes

4 ঘন্টা = <math xmlns = "http://www.w3.org/1998/Math/MathML"><mfenced><mrow><mn>4</mn><mo>&#xD7;</mo><mn>60</mn></mrow></mfenced></math> মিনিট মিনিট = 240 মিনিট 50 জন লোক একটি গর্ত খনন করে = 240 মিনিটে<math xmlns = "http://www.w3.org/1998/Math/MathML"><mo>&#x2234;</mo></math> " " " " " " " = <math xmlns = "http://www.w3.org/1998/Math/MathML"><mfenced><mrow><mn>240</mn><mo>&#xD7;</mo><mn>50</mn></mrow></mfenced></math> ''<math xmlns = "http://www.w3.org/1998/Math/MathML"><mo>&#x2234;</mo></math> 30 " " " " " " " " = <math xmlns = "http://www.w3.org/1998/Math/MathML"><mfrac><mrow><mn>240</mn><mo>&#xD7;</mo><mn>50</mn></mrow><mn>30</mn></mfrac><mo> = </mo><mn>400</mn></math> মিনিট বা 6 ঘন্টা 40 মিনিট
Bissoy MCQ

Related Questions

Ajit was assigned to dig a hole alone. But, after 3 hours of his work, Bipin was also assigned along with him to dig the hole. After 5 more hours, the work was complete and they were paid Rs. 660 and Rs. 330 respectively for their work. How many hours would each take to dig the hole working alone?
If it takes 50 workers 4 hours to dig a hole, how long should it take 30 workers to dig the same hole?
4 skilled workers can dig a pond in 8 days, whereas it takes 8 unskilled workers 12 days to dig it. How many days will it take 3 skilled and 15 unskilled workers to dig such a pond?
6 skilled workers can dig a pond in 8 days while it takes 9 unskilled workers 12 days to dig it. How many days will it take 4 skilled and 18 unskilled workers to dig such a pond?
I want to dig a well so I hire a team of labours according to a plan dig in a depth of 270 metre below the ground level. For the first 3 days labour worked as per plan. However, Subsequently finding that their resources were getting underutilised according to the plan, it started to dig 8 metres more than the plan everyday Therefore, a day before the planned that they had dig to a depth of 280 metres, how many metres of dig was planned every day.
A factory that employs 1000 assembly -in workers pays each of these workers at a rate of Tk. 5 per hour for the first 40 hours worked during a week and 1.5 times that rate for the hours worked in excess of 40 hours. whatis the total amount paid to the workers in a week in which 30% of the workers worked 20 hours, 50% worked 40 hours and the rest of the workers worked 50 hours?
If takes 6 men 4 days to dig a hole 3 feet deep. How long it will take 10 men to dig a hole 7 feet deep?
In the following question, two statements are numbered as A and B. On solving these statements, we get quantities A and B respectively. Solve both quantities and choose the correct option. Quantity A: Pipe A takes thrice the time taken by Pipe B to fill a tank. Together they can fill the tank in 15 hours, tank A and B is opened together for 4 hours and then Pipe A is closed and after 2 more hours Pipe B is closed and an outlet Pipe C is opened which when working alone can empty the tank in 10 hours. Calculate the time taken by C to empty the tank. Quantity B: A pipe A can fill the tank in 10 hours another pipe B can fill the tank in 15 hours and with the help of third pipe C they can fill the tank in 5 hours. Pipe A is opened for 4 hours then it is closed, pipe B is closed 3 hours before filling of tank and tank C is opened the whole time. Calculate the time taken to fill the tank
In the following question, two statements are numbered as A and B. On solving these statements, we get quantities A and B respectively. Solve both quantities and choose the correct option. Quantity A: Pipe A takes thrice the time taken by Pipe B to fill a tank. Together they can fill the tank in 15 hours, tank A and B is opened together for 4 hours and then Pipe A is closed and after 2 more hours Pipe B is closed and an outlet Pipe C is opened which when working alone can empty the tank in 10 hours. Calculate the time taken by C to empty the tank. Quantity B: A pipe A can fill the tank in 10 hours another pipe B can fill the tank in 15 hours and with the help of third pipe C they can fill the tank in 5 hours. Pipe A is opened for 4 hours then it is closed, pipe B is closed 3 hours before filling of tank and tank C is opened the whole time. Calculate the time taken to fill the tank.
Ram can dig a well in 36 hours but due to some illness his capability of doing work reduced and so he now takes longer hours to do same amount of work. A contractor gave him contract on basis of his previous health conditions. If contractor loses Rs. 5 per hour for delay in work then find how many hours Ram took to dig one well if contract includes digging of 15 wells and contractor lost Rs. 1800?