Q : The ratio of the speeds of the two airplanes is 7:15. If the first airplane covers a distance of 1050 km in 3 hours, what is the speed of the second airplane?
(A) 675 km/hour
(B) 750 km/hour
(C) 900 km/hour
(D) 720 km/hour
A man sets out on a journey. He travelled for a total of 16 hours. He covered the first half of the distance at a speed of 40 km / h and the second half at 60 km / h. What is the total distance he travelled?
(A) 384 km
(B) 768 km
(C) 576 km
(D) 960 km
A man walks a certain distance and rides back in 4 hours 30 minutes. he could ride both ways in 3 hours. The time required by the man to walk both ways is
(A) 5 hours
(B) 6 hours
(C) 4 hours 30 minutes
(D) 4 hours 45 minutes
29 boys are standing in a line such that distance between any two consecutive boys is same . A teacher takes 7 seconds to reach from first boy to 15th boy. How much more time (in seconds) will he take to reach the 22 boys?
(A) 3.5
(B) 4
(C) 2.5
(D) 3
Two cars travel from city A to city B at a speed of 36 and 48 km/hr respectively. If one car takes 3 hours lesser time than the other car for the journey, then the distance between City A and City B is
(A) 518 km
(B) 648 km
(C) 432 km
(D) 346 km
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