Question
Find how many cubes of side 10 cm each can be made by
melting a cuboid with dimensions 90cm × 120cm × 150cm?Solution
Volume of cuboid = 90 x 120 x 150 ; Volume of cube = 10 x 10 x 10 , Hence number of cubes = volume of cuboid/volume of cube = (90 x 120 x 150)/(10 x 10 x 10) = 1620
- Two cars βXβ and βYβ, which were 750 km apart, started traveling towards each other at the same time and met after 6 hours. If the speed of car β...
Bike X travels 180 km in t hours and bike Y travels 90 km in (t/2) hours. If bike X covers 150 km in 2.5 hours, then how many kilometres will bike Y tra...
If the diameter of a sphere is 42 cm, find the total surface area of the sphere.
βAβ and βBβ started moving towards each other at same time with a speed of 22 km/hr and 14 km/hr, respectively. If the distance covered by βAοΏ½...
Two motorcycles, a Honda and a Hero, set off simultaneously from the same location, aiming for the same endpoint. The Honda travels at a speed of 48 km/...
Anamika travels a distance of 900 km at a constant speed. However, when she increases her speed by 10 km/hr, she completes the journey 3 hours faster. ...
A motor-cycle covers 90 km with a speed of 40 km/hr. find the speed of the motor-cycle for the next 90 km journey so that the average speed of the whole...
In a 1200-metre race, 'Karan' beats 'Arjun' by '240' metres and 'Veer' by '360' metres. If 'Arjun' and 'Veer' participate in a 600-metre race, and 'Veer...
Bike covers 22 km in 2 hours, 48 km in 3 hours, and 30 km in 5 hours. Find the average speed of the bike
If a car runs at 30 km/hr, it reaches its destination late by 15 minutes but if runs at 45 km/hr it is late by 7 minutes. What is the correct time for t...