Question
Aman goes from his home to his office at a speed of 30
m/s and returns at 50% more speed. If the distance between his home and office is 1,800 metres, then find the average speed of the entire journey.Solution
The speed by which the man returns to his home from his office = 1.5 x 30 = 45 m/s Time taken by the man to reach his office = (1800/30) = 60 seconds Time taken by the man to return to his home from office = (1800/45) = 40 seconds Average speed = [(Total distance) /(Total time) ] = [(2 x 1800) /(60 + 40) ] = (3600/100) = 36 m/s
Who among the following have equal number of students ahead and behind to him?
W is taller than K who is shorter than U. O is taller than D but shorter than K. U is shorter than W. Who is the tallest?
If the number of chocolates of Suman is less than 26 and is an odd number which is divisible by 3 but not by 5, then how many chocolates does Suman have?
Six friends F, G, H, I, J and K have different heights. G is taller than only K. F and H are taller than K but shorter than I, who is not the tallest. W...
There are five persons (A, B, C, D and E) of different height. C is taller than only three persons. A is taller than B but shorter than C. E is taller t...
How many laptops are cheaper than B?
Srikant is shorter than Raju. Anuj is taller than Srikant. Vipin is taller than Raju but shorter than Rakesh. Raju is taller than Anuj who will be in th...
How many persons are shorter than U?
Which of the following is the lightest Person?
Five persons M, N, O, P and Q have different heights. M is taller than Q and P. N is taller than O. M is not taller than N. Who among the following is ...
Relevant for Exams:
