Speed of a boat in still water is 3 times more than the speed of stream. If boat covers 135 km in downstream in 9 hours, then find the time taken by the boat to cover 108 km in upstream.
Let the speed of stream be ‘x’ km/hr. So, speed of boat in still water = 4 × x = 4x km/hr Downstream speed of boat = 4x + x = 5x km/hr According to question; 5x = 135/9 = 15 Or, x = 3 Upstream speed of the boat = 4x – x = 3x = 3 × 3 = 9 km/hr Required time taken = 108/9 = 12 hours
Who among the following appeared for IBPS PO?
If in a certain way ‘Red’ is related to ‘Banana’, Blue is related to ‘Grapes’ in the same way ‘Black’ is related to who among the follow...
How many persons live below F (in the same type of flat)?
Five laptops, Toshiba, Dell, Apple, Acer and Samsung, are kept one above the other (not necessarily in the same order). Toshiba is four places above th...
Six persons A, B, C, D, E, and F live in a building of six-floors such that the bottommost floor is numbered as 1 and the topmost floor is numbered as 6...
What will be the difference between the marks secured by E and D?
Who among the following organized party immediately after B?
How many boxes are placed above B?
Using which of the following material does floor 4 was built?
Which of the following days does plant G was exhibited?
