Question
Pipe X requires 12 hours to fill
2/3 of a tank, whereas pipe Y can empty the entire tank in 24 hours. If both pipes are opened simultaneously, how long will it take to fill 75% of an empty tank?Solution
ATQ, Time taken by pipe ‘X’ to fill the tank completely = 12 × (3/2) = 18 hours Time taken by pipe ‘Y’ to empty the tank = 24 hours Let the capacity of the tank be 72 units Efficiency of pipe ‘X’ = 72/18 = 4 units/hour Efficiency of pipe ‘Y’ = 72/24 = 3 units/hour Therefore, time taken by pipes ‘X’ and ‘Y’ to fill 75% of the tank = {(0.75 × 72)/(4 – 3)} = 54 hours
Select the figure that will come in place of the question mark (?) in the following figure series.
In a certain code RAINBOW is written as VNAMHZQ. How is SEMINAR written in that code?
What should come in place of the question mark (?) in the given series based on the English alphabetical order?
TUO, VWR, XYU, ZAX, ?
If ‘A’ means (÷), ‘B’ means (×), ‘C’ means (+), and ‘D’ means (-), then what is the value of the expression:
54 B 54 A 27 B 8 D...
Statements:
Only orange is colour.
Mostly orange is fruit.
Some fruits are vegetables.
Conclusions:
I. No colour is a...
If ‘ GLOSSORY ’ is coded as 97533562 and ‘ GEOGRAPHY ’ is coded as 915968402 , then ‘ GEOLOGY ’ can be coded as
...What is the code of “Recommendation Ruled”?
Seven persons A, B, C, D, E, F, and G are sitting in a straight line, facing North. Only two people sit to the left of A. Only three people sit between ...
If each vowel of the word ' QUALITY ' is changed to the next letter of the English alphabets and each consonant is changed to the previous letter of the...
Select the correct combination of mathematical signs that can sequentially replace the '$' signs and balance the equation.
180 $ 9 $ 6 ...
Relevant for Exams:
