Question
A high-speed Bullettrain takes 20 seconds to cross a
platform. The length of the Bullettrain is 40% less than the length of the platform. If the Bullettrain's speed is increased by 25%, what will be the time taken by the train to cross a pillar?Solution
ATQ, Let the length of the platform be '10a' metres So, length of the train = 10a × 0.6 = '6a' So, speed of the train = {(6a + 10a)/20} = '0.8a' m/s So, new speed of the train = 0.8a × 1.25 = 'a' m/s So, required time = 6a ÷ a = 6 seconds
In each of the following questions, select the related word from the given alternatives:
COVER : EMXCT :: MOUSE : ?
If all the letters in the word ‘CANTONMENT’ are arranged in alphabetical order from left to right such that the vowels are arranged first followed b...
Select the option that is related to second number in the same way fourth number is related to third number.
17 : ? :: 26 : 674
Five marbles named as A1, K1, P1, R1, and T1 are kept one above the other (not necessarily in the same order). Only marble T1 is between K1 and P1. P1 i...
Basketball : 5 :: Volleyball : ?
Select the option that is related to the third number in the same way as the second number is related to the first number and the sixth number is relate...
Select the option in which the words share the same relationship as that shared by the given pair of words.
Hive: Bee
If 84 % 6 @ 5 = 9 and 132 % 11 @ 3 = 9, then 256 % 8 @ 17 = ?
If the 7th day of a month is 3 days earlier than Friday, then what day will be on the 19th day of the month?
If ECD = 24 and HGF = 42, then JKFG =
Relevant for Exams:
