Q95 of 106 Page 310

The table shows the time for elevators take to travel various distances. Find which elevator is fastest and which is slowest.


How much distance will be travelled by elevators B and C separately in 140 secs? Who travelled more and by how much?

on the basis of given table

Elevator A takes 29s to cover 435m


∴Distance covered by elevator A in 1s =


Elevator B takes 28s to cover 448m.


∴Distance covered by elevator B in 1 s =


Elevator C takes 10s to cover 130m


∴Distance covered by elevator C in 1s =


Elevator D takes 5s to cover 85 m


∴Distance covered by elevator D in 1s =


Hence, in 1s, elevator D covers more distance as compare to elevator A, B and C. so, elevator D is fastest, while elevator C covers least.


Hence elevator C is slowest.


Now, elevator B covers distance in 140s = 140× 16 = 2240m


Elevator C covers distance in 140s = 140× 13 = 1820m


∴Elevator B covers more distance than C = 2240-1820 = 420m


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