Question
An inlet pipe can fill an empty tank in 12 minutes
whereas an outlet pipe can empty the fully filled tank in 18 minutes. Find the time taken by both the pipes together to fill half of the empty tank.Solution
Let the total capacity of tank be 36 litres (LCM of 12 and 18)
Efficiency of inlet pipe = (36/12) = 3 litres/minute
Efficiency of outlet pipe = (36/18) = -2 litres/minute
Required time = (0.5 × 36) ÷ (3 - 2) = 18 minutes
Nitin walks 20 km Southwards, then turns right and walks 20 km. he then turns left and walks 20 km. He takes a 60 degree turn rightwards and walks st...
A men starts from home, drives 3 km towards North, takes a left turn and drives for 7 km. He then takes a left turn and drives for 10 km before taking ...
Rohit eats more than Ankit, Shubham eats less than Prabhu but more than Ankit. Rohit eats less than Shubham. Who eats the most in the group?
G is in which direction with respect to B.
What is the direction of X with respect to U?
If H is 12m to the south of point N, then find the distance between H and K?
Shyam walks 10m north from his house, turns left and walks 25m, again turn right and walks 40m, then turns left and walks 5m to reach the school. In whi...
What is the distance between N and J?
A car travels 25 kms towards north from garage. It turns left and travels 30 kms, then turns right and travels 15 kms. How far is car from the garage?
Pole A is 4m to the west of pole R. Pole S is 8m to the north of pole A. Pole C is 6m to the north of pole B, which is 4m to the west of pole S. In whic...
Relevant for Exams:
