3 pumps , working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 pumps work to empty the tank in 1 day ?A10B11C12D9সঠিক উত্তর:C.12শেয়ার :Share on FacebookShare on WhatsAppShare on Telegram
১If 0.4 of a number is equal to 0.06 of another number, the ratio of the numbers is :3:43:2020:32:3বিস্তারিত
২The breadth of a rectangular field is 60% of its length . If the perimeter of the field is 800 m, what is the area of the field ?37500 sq.m40000 sq.m48000 sq.m18750 sq.mবিস্তারিত
৩Peter purchased a machine for TK. 80,000 and spent TK. 5,000 on repair and TK. 1,000 on transport and sold it with 25% profit , At what price did he sell the machine ?TK.1,06,250TK.1,07,500TK.1,17,5001,05,100বিস্তারিত
৪A takes twice as much time as B or thrice as much time as C to finish a piece of work . Working together , they can finish the work in 2 days . B can do the work alone in :6 days8 days12 days4 daysবিস্তারিত
৫Which of the following fractions is greater than 34\frac{3}{4}43 and less than 56\frac{5}{6}65 ? 23\frac{2}{3}32910\frac{9}{10}10912\frac{1}{2}2145\frac{4}{5}54বিস্তারিত
৭Rahim ranks seventh from the top and twenty-sixth from the bottom in class . How many students are there in the class ?32333431বিস্তারিত
৯Pipes A and B can fill a tank in 5 and 6 hours respectively. Pipe C can empty it in 12 hours. If all the three pipes are opened together, then the tank will be filled in:2(8/11) hours3(9/17)hours4(1/2) hours11(3/17)hoursবিস্তারিত
