# Directly Proportional

## Trending Questions

**Q.**Two trains start at the same time from A and B and proceed towards B and A at 36 km/h and 42 km/h, respectively. When they meet, it is found that one train has moved 48 km more than the other. Then, the distance between A and B (in km) is:

- 460
- 544
- 636
- 624

**Q.**Vinod and Kaurvaki start travelling in the same direction at 8 km/h and 13 km/h, respectively. After 4 h, Vinod doubled his speed and Kaurvaki reduced his speed by 1 km/h and reached the destination together. How long did the entire journey last?

- 3 h
- 6 h
- 12 h
- 9 h

**Q.**A train overtakes two girls who are walking in the opposite direction in which the train is going at the rate of 3 km/h and 6 km/h and passes them completely in 36 seconds and 30 seconds respectively. The length of the train (in metres) is:

- 125 m
- 120 m
- 150 m
- None of these

**Q.**A man travels the first part of his journey at 20 km/h and the next at 70 km/h, covering the entire journey at an average speed of 50 km/h. What is the ratio of the distace that he covered at 20 km/h to that he covered at 70 km/h?

- 3:22
- 4:21
- 1:4
- 3:5

**Q.**A starts driving from P to Q at 9 am and B starts driving from Q to P at 10 am. B is 50% faster than A. What is the time when they meet if P and Q are 300 km apart and A's speed is 50 km/h?

- 12:30 pm
- 12 noon
- 11:00 am
- 11:30 am

**Q.**A surveillance plane is moving between two fixed places Pukhwara and Kargil at 120 km/h. The distance between two places is 600 km. After 18 hours, what will be the distance between the Kargil and its position if it starts moving from Pukhwara?

- None of these
- 360 km
- 300 km
- 240 km

**Q.**The charges for a graphics designer is partially fixed and partially variable with the number of hours. The charge is Rs.550 for 4.5 hours and Rs.300 for 2 hours. Find the charges of 1 hour?

- 200
- 300
- 400
- 100

**Q.**Till the age of 21, Arun grows such that his height varies as the square root of this age. When Arun is 9 years old, his height is 4 feet. What is his height at 16 years?

- 5 feet
- none of these
- 5 feet 2 inches
- 5 feet 4 inches

**Q.**

Vikrant drives to office from home every day at a steady rate of x kilometers per hour. On a particular day, Vikrant car tire punctured exactly half way to office. He immediately started walking to office at a steady pace of y kilometers per hour. He arrived at office exactly t hours after leaving his home. How many kilometers is it from the office to Vikrants home?

**Q.**

A group of students equal in number to the square root of half the whole class is selected for a project. Two more students were selected as captain and vice captain. Rest of the class which form 89 th of class were given leave. Find the total number of students in the class?

64

81

80

72