Question
An inlet pipe can fill a tank in 18 minutes, while an
outlet pipe can empty it in 27 minutes. Sujata starts the inlet pipe at 6 a.m., but the outlet pipe is accidentally opened at the same time. She notices the mistake at 6:15 a.m. and closes the outlet pipe. At what time will the tank be completely filled?Solution
Let the volume of the tank (LCM 0f 18 and 27) = 54 units So, the inlet pipe fills in 1 minutes = 54/18 = 3 units And the 0utlet pipe empties in 1 minutes = 54/27 = 2 units For the first 15 minutes both the inlet and outlet pipe are working. Hence, it will fill in starting 15 minutes = 15× (3-2) = 15 unit Remaining volume of the tank = 54-15 = 39 units Now this 39 units is to be filled by inlet pipe Time taken to fill the remaining part of tank = 39/3 = 13 minutes time to fill the tank completely filled = 6:15 + 13 minutes = 6:28 a.m.
√1764 + 35 × 8 + 39 = ?2
18% of 200 - 16% of 150 = ?
25% of 30% of 3/5 of 14500 =?
2(1/3) + 2(5/6) – 1(1/2) = ? – 6(1/6)
7/3 of 4/5 of 15/56 of ? = 83
What will come in place of the question mark (?) in the following expression?
40% of 150 – ?% of 80 = 25% of 400
555.05 + 55.50 + 5.55 + 5 +0.55 = ?
64.5% of 800 + 36.4% of 1500 = (?)² + 38
What will come in the place of question mark (?) in the given expression?
25% of 1280 + (41 × 4) = ?2
Simplify the following expression:
((32)4 - 1)/33×31× (210+1)
