Question
A boat can cover 60 km in still water and 75 km in
downstream in 4 hours and 3 hours respectively. Find the time taken by the boat to cover 36 km upstream and 55 km downstream.Solution
Speed of the boat in still water = 60/4 = 15 km/h Downstream speed of the boat = 75/3 = 25 km/h Speed of the stream = 25 – 15 = 10 km/h Upstream speed of the boat = 15 – 10 = 5 km/h Time taken to cover 36 km upstream and 55 km downstream = 36/5 + 55/25 = 7.2 + 2.2 = 9.4 hours
The ratio of quantity of milk and water in a 400 litres mixture is 7:3, respectively. On removing 'M' litres of mixture the difference between the quant...
Five persons S, T, U, V and W have different heights. T is the shortest person. U is taller than V but shorter than W. S is shorter than V. Who among th...
How many persons are not facing south?
A 150-litre solution of juice and water contains the two in the ratio 3:2, respectively. If 30% of the solution is replaced with water, what will be the...
Study the following information carefully to answer the given questions below-:
There are two couples in a family. D has two children. P is wife ...
Select the option that represents the correct order of the given words as they would appear in an English dictionary.
1- Sennet
2- Senn...
Find which one of the given words cannot be made from the letters of the given word.
‘ TEMPERATURE ’
...If H = I, F ≥ G, H < G and J > I , then which of the following conclusion is true?
Who among the following person sits fourth to the left of N?
What is Android?
Relevant for Exams:
Hey, Don't leave. If you have any queries regarding any exam let us know here.
