২৮৬৯২
A man can do piece of work in 5 days, but with the help of his son, he can do it in 3 days. In what time can the son do it alone?
উত্তর
712% দিন
২৮৬৯৩
30 men can do a piece of work in 16 days. How many men would be required to do the same work in 20 days?
উত্তর
24
২৮৬৯৪
A can do 3 piece of work in 4 hours, B and C together in 3 hours , and A and C together in 2 hours. How long will B alone take to do it?
উত্তর
12 hours
২৮৬৯৫
If the perimeter of a rectangular garden plot is 34 feet and its area is 60 square feet, what is the length of each of the longer sides?
উত্তর
12 feet
২৮৬৯৬
A tank has two leakages. The first leakage alone can empty the tank in 9 minutes and the second alone would have done it in 6 minutes. If water leaks out at a constant rate. how long does it take both the leakage together to empty the tank?
উত্তর
3.6 min
২৮৬৯৮
A candidate scoring 25% marks in an examination fails by 30 marks while another candidate who score 50% marks gets 20 marks more than the minimum pass marks. what is the minimum pass mark?
উত্তর
80
২৮৬৯৯
A man riding his bicycle covers 150 metres 150 metres in 25 seconds. is his speed in km per hour?
উত্তর
25
২৮৭০০
Worker P is 50 % as efficient as worker Q. Worker R does half of the work done by P and Q together. If R alone does the work in 40 days , then P, Q, and R together can do the work in -
উত্তর
1313 days