Question
Pipe A alone can fill 75% of a cistern in 18 minutes.
When both Pipe A and Pipe B are opened together, they can fill the entire cistern in 33 minutes. How long would it take for Pipe B alone to empty the full cistern?Solution
Time taken by pipe 'A' alone to completely fill the cistern = 18 ÷ 0.75 = 24 minutes
So, let the capacity of the cistern = L.C.M of 24 and 33 = 264 units
So, efficiency of pipe of 'A' = 264 ÷ 24 = 11 units/minute
Combined efficiency of pipes 'A' and 'B' = 264 ÷ 33 = 8 units/minute
So, efficiency of pipe 'B' alone = 8 - 11 = 3 units/minute (outlet)
So, time taken by pipe 'B' alone to empty the cistern = 264 ÷ 3 = 88 minutes
After walking for 6 km. Aradhana turns to the right and then walks 2 km. After that she turns to the left and walks 10 km. In the end. Aradhana is movin...
Town E is to the west of town N. Town S is to the south of town E, Town L is to the east of town S. Town L is towards which direction with respect to t...
A is a place which is located 4 km away in the north-west direction from the capital B. C is another place that is located 4 km away in the south-west d...
Mita started walking towards North. After walking 25 metres she turned right and walked 20 meters and took a left turn and walked 5 meter. In which dire...
Babita starts from point J in west direction and walks 10 m to reach point K. From there, she takes a left turn and walks 7 m to reach point L. From poi...
In a certain code language, "GONE" is written as "123" and "DO" is written as "57". How is "WERE" written in that code language?
Q is 40 meter to the East of R. S is 36 meter to the north of R and 20 meter to the west of T. U is 50 meter to the South of T. U is 20 meter to the We...
A farmer is preparing his field. He starts his tractor from garage and drives 5 km towards East. From there, he turns right and drives 6 km. Then, he t...
In what direction is U with respect to R?
Govind starts from his house towards West. After walking a distance of 50 metres he turned towards right and walked 20 metres. Then he turned left and m...
Relevant for Exams:
