Question
A boat goes 50 km in upstream in 5 hours and takes 4
hours to complete a distance of 16 km in downstream. Find the speed of boat in still water.Solution
Speed of boat in still water = (D + U)/2 Upstream speed (U) = 50/5 = 10 km/hr Downstream speed (D) = 16/4 = 4 km/hr Speed of boat in still water = (10 + 4)/2 = 14/2 = 7 km/hr
Durgesh can complete a task alone in 21 days. If Vikash works alone for 8 days and then leaves, Durgesh can finish the remaining work in 7 days. Satish ...
A car typically travels 20% faster than a bike. The bike takes 4 hours to cover 300 km. If the car's speed were 8 km/h less than ...
Prove the identity: tan² θ + 1 = sec² θ
What is the total production of Product Y for the entire year, and what percentage does it contribute to the total production of all products in the las...
Find the area enclosed between the curves y=(x−4)2 and y=16−x2over their intersection interval.
The selling price of 8 shirts is the same as the cost price of 9 shirts. If each shirt is marked at 50% above its cost price, calculate the percentage d...
Find the sum of areas of surfaces of an open chalk box that is in the shape of Cuboid.
Statement I:Â Sum of all three dimensions of the chalk b...
A container has a mixture of two liquids, A and B, in the ratio of 5:3. If 16 liters of the mixture are removed and replaced with 16 liters of liquid B,...
The following table shows the number of students enrolled in different courses at a university:
The average age of three friends Maya, Nirmal, and Raju is 27 years. The age ratio of Nirmal to Raju is 9:5, and Maya is 11 years...
Relevant for Exams:
