Skip to main content

Aptitude Day 265

Problems on Time and Distance:

1. The Sound is said to travel in the air about 600 feet per second. A man hears the axe striking the tree. 7/6 seconds after he sees it strike the tree. How far is the man from the woodchopper?

Solution:
                 Distance = 600*7/6 
                                = 700 feet.

2. An express train travelled at an average speed of 200 km/hr, stopping for 2 minutes after every 40 km. How long did it take to reach its destination 800 km from the starting point?

Solution:
                 Time taken to cover 800 km = 800/200 = 4 hours.

                 Number of stoppages = 800/40 - 1= 19.

                Total time of stoppages = 2*19 = 38 minutes.

                Total time to reach the destination = 4 hours 38 minutes.


Comments

Post a Comment

Popular posts from this blog

Aptitude Day 47

Problem On Numbers 1. Three numbers are in the ratio 1:2:3 and their average is 180. What's the largest number? Solution:                 Let the numbers be x, 2x and 3x.                 x+2x+3x = 180                          6x = 180                            x = 30                The largest number is 3x = 90. Problem to solve: Three numbers are in the ratio of 4:2:3 and their product is 648. Find the smallest number. 
Post a Comment
Read more

Vocabulary Day 21

Stammer Thesaurus: Verb : stutter in speech, speak haltingly, speech defect           halt, hesitate, pause, stop, sputter... Antonyms : say quickly, pronounce, enunciate... Example sentences: ·          He was stammering when the teacher caught him red-handed. ·          One should avoid the stammering while delivering a speech. 
Post a Comment
Read more