Question
Train P, which is 300 meters
long, passed train Q moving in the opposite direction toward it in 16 seconds. Train Q took 16.8 seconds to pass a stationary streetlight. Determine how long it will take train P to pass a platform that is 730 meters long, given that train Q took 46 seconds to cross the same platform.Solution
ATQ, Let, length of train Q = ‘p’ m Speed of train Q = p/16.8 Let, speed of train P = ‘q’ m/s So, (p + 730)/(p/16.8) = 46 16.8p + 12264 = 46p p = 420 Speed of train Q = 420/16.8 = 25 m/s So, (300 + 420)/(25 + q) = 16 720 = 400 + 16q q = 20 m/s Required time = (730 + 300)/20 = 51.5 seconds
Find the number of zeros in 58!.
- What is the smallest 5-digit number divisible by 10, 18, 30 and 45?
- 75% of 'A' equals (15/8) times 'B'. Determine the ratio A:B, assuming A and B are co-prime numbers.
In a class of 40 students, 60% are boys and the rest are girls. If 50% of the boys and 70% of the girls passed the exam, how many students failed the exam?
Find the remainder when 7103 is divided by 12.
A two-digit number has a sum of its digits equal to 11. Additionally, if 54 is subtracted from this number, the resulting number has its digits reversed...
What should come in place of question mark (?) in the following questions? Find the exact value.
In a class, 2/5 of the students are girls and rest are boys. If 4/9 of the girls and 1/3 of the boys are absent, what part of the total number of studen...
Find the largest four-digit number which when divided by 5, 7, 9, and 12, leaves a remainder 2, 4, 6, and 9 respectively.
Select the option that gives decimal numbers 0.24, 1.23, 0.0881, and 2.66 arranged in ascending order.
Relevant for Exams:
