new General Studies 8000+ One Liner PDF Download

SSC CGL Tier 1 :: Quantitative Aptitude QA Test 57

Quantitative Aptitude » QA Test 57 » General Questions - Discussion

1 .


An aeroplane flies along the four sides of a square at a speed of 100, 200, 300 and 400 km/h, respectively. What is the average speed of the plane in its flight around the square?

[ A ]    196 km/h
[ B ]    200 km/h
[ C ]    250 km/h
[ D ]    None of the above right
Answer : Option D
Explanation :
Average speed = $Total\,\,\, Distance \over Total\,\,\, time$

= $x + x + x + x \over {x \over 100} + {x \over 200} + {x \over 300} + {x \over 400}$

= $4x \over {12x + 6x + 4x + 3x \over 1200}$

= $4x \times 1200 \over 25x$

= 192 km/hr
Workspace Report error
Write your comments here:
Name *: Email:
new ssc Recruitment
new ssc Upcoming Exams Notifications
new Latest Govt Jobs

Copyright 2018 | Privacy Policy | Terms and Conditions | Contact us | Advertise

@