Question
Ravi and Suresh can finish a task alone in 72 days and
96 days respectively. If both work together and earn Rs. 8,400 in total, how much does Ravi receive?Solution
ATQ, Ratio of efficiency = reciprocal of days. Ratio of efficiency of Ravi and Suresh = 96:72 = 4:3 So, ratio of wages = 4:3 Raviβs wage = (4/7) Γ 8,400 = Rs. 4,800
- Two cars, βXβ and βYβ, started from town βMβ and βNβ respectively towards each other at the same time. When they crossed paths after 6 hour...
- A car was driven for 2.5 hours at a speed of 100 km/h and then for 1.5 hours at a speed of 80 km/h. Find the car's average speed for the total journey.
The ratio of the speed of car to that of a train is 15:22. If the speed of the train is 35 Km/hr more than that of the car, what is the speed of the car?
A car travels from town P to town Q at 60 km/h and returns from Q to P at 40 km/h. What is the average speed for the whole journey?
A train completes a journey in 5 hrs with a speed of 50 km/hr. At what speed must it travel to complete the journey in 5 hrs?
A train would take 20 seconds to cross a stationary pole. If the train was 200m shorter, it would have taken 10 seconds less. Find the speed of the train.
- Rohit jogs at a pace of 14 km/h and takes 11 hours for his fitness trail. What speed does he need to jog at to finish it in just 7 hours?
A person travels 30 km at a speed of 15 km/h, another 20 km at 10 km/h, and the final 50 km at 25 km/h. What is the average speed for the entire journey?
- A truck covers the distance from Depot A to Depot B at 30 km/h and returns at 45 km/h. Find its average speed.
Average speed of βAβ during a 20-hour journey is 32 km/h. If he covered the first 240 km of his journey at a speed of 20 km/h, then find the speed a...