Tap ‘A’ and tap ‘B’ can fill a tank in 40 hours and 30 hours, respectively. If both taps are opened together, then find the time after which tap ‘A’ must be closed so the whole tank can be filled in 15 hours.
Let total capacity of the tank is 120 litres (LCM of 40 and 30) Quantity of water filled by tap ‘A’ in one hour = 120/40 = 3 litres Quantity of water filled by tap ‘B’ in one hour = 120/30 = 4 litres Let tap ‘A’ is closed after ‘x’ hours So, 7 × x + 4 × (15 – x) = 120 Or, 3x = 60 Or, x = 20 hours
Six persons (L, M, N, O, P and Q) sit around a circular table facing towards the center but not necessarily in the same order. N sits immediate right of...
In which of the following statement the first person sits exactly between the second and the third person in the following arrangement?
I) DTJ
How many persons are sitting between Q and U when counted to the left of Q?
What is the position of the one who like Germany with respect to M?
Read the directions carefully and answer the following questions.
There are six persons C, E, D, F, A, and B sitting around the circular table ...
Which of the following colour does E like?
Which of the following groups of persons have the first person sitting between the other two?
Who among the following person sits immediate right of A?
Who sits opposite to R?
What is the position of K with respect to P?