Two pipes A and B can fill a tank in 24 min. and 32 minutes respective – McqOptions

MCQOPTIONS

1.	Two pipes A and B can fill a tank in 24 min. and 32 minutes respectively. If both the pipes are opened together, after how much time B should be closed so that the tank is full in 18 minutes.
A.	7 minutes
B.	6 minutes
C.	8 minutes
D.	9 minutes
Answer» D. 9 minutes

Discussion

No Comment Found

Related MCQs

What is the least number that should be added to the smallest 6 digit number to make it a perfect square?
The population of the city increases by 8% in the first year and decreases by 8% during the next year and in the third year it again increases by 10%. Find the population of the city at the end of third year if initially it was 100000.
The given figure shows the obliquie sketch of a cuboid that has a width of 5 units. What is the sum of the areas of the faces of the given cuboid?
Find the value of \[\sqrt{10+\sqrt{25+\sqrt{108+\sqrt{154+\sqrt{225}}}}}\]\[+\left( \sqrt{\frac{225}{729}}-\sqrt{\frac{25}{144}} \right)\div \sqrt{\frac{16}{81}}\]
Find the number, which when subtracted from its square results in 12.
What is the total on the face opposite to 4 + 3 on the dice given?
Find the square root of 15876.
What is the least number by which 1565109 must be multiplied so that the product becomes a prefect cube?
Evaluate, \[\sqrt{\frac{4}{3}}-\sqrt{\frac{3}{4}}.\]
Which row is matched incorrectly? Row Three-Dimensional Net I Cube II Cuboid III Square Pyramid IV Triangular Pyramid