Question
Pipe A can fill a tank in 12 hours. Pipes A and B
together can fill it in 6 hours. Pipes B and C together can fill it in 4 hours. In how many hours will pipes A, B and C together fill the tank?Solution
ATQ, A = 1/12 B = 1/6 − 1/12 B = (2 − 1)/12 = 1/12 B + C = 1/4 C = 1/4 − 1/12 C = (3 − 1)/12 = 2/12 = 1/6 A + B + C = 1/12 + 1/12 + 1/6 = (1 + 1 + 2)/12 = 4/12 Required time = 12/4 hours = 3 hours
If A denotes ‘+’, B denotes ‘×’, C denotes ‘−’, and D denotes ‘÷’, then what will come in place of ‘?’ in the following equation...
In the following question, select the figure which can be placed at the sign of question mark (?) from the given alternatives.
What should come in place of the question mark (?) in the given series?
10 27 45 64 84 ?
In a certain code language, MALE is written as 2375 and CIRCULAR is written as 98496734 then how can CLAIM be written in that code language?
If ‘A’ stands for ‘÷’, ‘B’ stands for ‘×’, ‘C’ stands for ‘+’ and ‘D’ stands for ‘−’, then what will come in place o...
A man starts from point A and walks 12km towards East. He turns right and walks 4km; turns right again and walks 8km. He then takes another right an 7km...
Two statements are given followed by four conclusions I, II, III and IV. You have to consider these statements to be true, even if they seem at variance...
Select the set in which the numbers are related in the same way as are the numbers of the following sets.
(NOTE: Operations should be performed o...
Find the next number in the series.
525, 373, 251, 159, 97, ?
Select the set in which the numbers are related in the same way as the numbers of the given sets. (NOTE : Operations should be performed on the whole nu...
Relevant for Exams:
