Question
Two inlet pipes M and N alone can fill a tank in 15
hours and 18 hours respectively and an outlet pipe P alone can empty the whole tank in 10 hours. First pipe M is opened for 6 hours, then pipe P is opened for 4 hours and rest of the tank is filled by pipe N. In what time will the tank be filled completely?Solution
Total capacity = 90 units (LCM of 15, 18 and 10) Efficiency of pipe M = 90/15 = 6 units/hr Efficiency of pipe N = 90/18 = 5 units/hr Efficiency of pipe P = 90/-10 = -9 units/hr Capacity of tank filled by pipe M in 6 hours = 6 × 6 = 36 units Capacity of tank emptied by pipe P in 4 hours = -9 × 4 = -36 units Capacity of tank left for pipe N = 90 – 36 – (-36) = 90 units Time taken by pipe N to fill the remaining tank = 90/5 = 18 hrs Total time taken = 6 + 4 + 18 = 28 hrs
In each group of questions below are two conclusions followed by five set of statements. You have to choose the correct set of statements that logicall...
In the questions given below there are three statements followed by two conclusions I and II. You have to take the three given statements to be true ev...
Statements: H ≤ L< S ≤ K , S = G ≥ I > Q, U ≤ B < N = C = I
Conclusions: I. B < S II. H < Q
Based on the following statements, which is the correct conclusion drawn.
Only gentlemen can become members of the club. Many of the members of t...
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at varianc...
Read the statement, followed by two conclusions. Read them carefully and select thecorrect option.
Statement: If you are depressed, you are livin...
Study the statements and the conclusion and point out which statement studied together will bring the conclusion.
Statements:
I. Price r...
Rajesh purchased 6 mangoes, 3 bananas and 10 guavas in ₹136. If the ratio of the cost (per piece) of mangoes, bananas and guavas is 3 : 2 : 1, what wi...
Given below are two statements, followed by two conclusions. Assume the given statements to be true even if they vary with commonly known facts. Based o...
In a party, every couple has at least one child (all minors) with them and there are 12 couples. Which one of the following inferences would be possible?
Relevant for Exams:
