Question
Sound travels fastest in which
medium? ÂSolution
Sound needs a medium to travel; it travels fastest in solids, especially metals like iron.  In solids, particles are tightly packed, allowing faster vibrations.  In gases, particles are far apart, so sound is slowest.  Sound cannot travel in vacuum.
Raj, Sanjay and Vaibhav can separately finish a work in 20, 30 and 40 days, respectively. In how many days Raj can finish the work if he is assisted.by ...
- Person A is twice as efficient as Person B. Person B can complete a certain task in 32 days, while Person C takes 4 days more than Person A to finish the s...
- Ayaan and Kabir started working together on a task. Ayaan does 4 units per day and Kabir can finish the full task in 25 days alone. The total work is 100 u...
A red JCB machine can complete the excavation of a field in 10 days, while a green JCB machine can accomplish the same task in 15 days. If both machines...
Working together, Amit and Pawan can finish a task in 22.5 days, and Pawan and Chirag can complete 60% of the same task in 14.4 days. Given that Amit is...
A and B can complete a job together in 30 days; B and C can complete the same job together in 25 days, while C and A can complete the same job together ...
Karan, Arjun and Krunal alone can complete a work in 40, 60 and 48 days respectively. All of them started working together but after 3 days from start K...
‘M’ alone can complete a work in 18 days. ‘N’ is 50% as efficient as ‘M’. How long will they take to complete the work together?
...‘A’ can do a piece of work in 10 days. ‘B’ can do 70% of the same work in 20 days. If they work together for the entire time and get paid Rs.108...
Ajay and Vijay can finish a task in 9 days working together. Charu, who is twice as efficient as Vijay, can complete the task alone in 18 days. If Ajay ...
