Question
Train P starts from Lucknow to Dehradun at 11:55 am with
an average speed of 27.5 m/s. Train Q starts from Dehradun to Lucknow at 1:35 pm with an average speed of 22.5 m/s. At what time the two trains will meet each other if the distance between Lucknow and Dehradun is 615 Km.Solution
Speed of train P = 27.5 × 18/5 = 99 Km/h Speed of train Q = 22.5 × 18/5 = 81 Km/h Distance travelled by train P till 1:35 pm = 99 × 5/3 = 165 Km Relative speed of trains = 99 + 81 = 180 Km/h Remaining distance to be travelled after 1:35 pm = 615 – 165 = 450 Km Time taken to cover 450 Km = 450/180 = 5/2 = 2 hours 30 minutes So the two trains will meet each other at 1:35 + 2:30 = 4:05 pm
A man spent 45% of his income in May. If his savings is increased by 30% in June and becomes Rs. 7150, then find the income of man in May.
Ajay spent 30% of his monthly income on rent and 44% of the remaining on food and the rest amount is saved by him which is Rs. 2548, then find the month...
In January 2023, Arti paid EMI which was 22 percent of her monthly salary. She paid the remaining amount on shopping on groceries and purchased clothes ...
There are 500 students in a college. 45% of them are boys. Among the boys and girls, 35% and 50% respectively are interested in music. How many students...
40% of a neighborhood likes gardening and 60% likes DIY projects. If 25% enjoy both and the other 20 neighbors like neither, find the total number of ne...
Neeraj's earnings decreased by 50% and after that subsequently increased by 50%. Find the final loss % on his earnings.
Ravi scored 35% in an exam and failed by 40 marks. Meena scored 50% and crossed the passing mark by 20 marks. What are the passing marks of the test?
A spent 12.5% of his monthly income on study and 32% of the remaining on rent. If amount spent on rent is Rs. 1512, then find the amount spent on study
Find the rate of interest if amount after 2 years on simple interest on a capital of Rs 1000 is Rs 1200.