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Let the speed one train be x m/s and the speed of the second train be y m/s. Length of the first train = Speed × Time = 30x Length of second train = Speed × Time = 20y So, {(30x + 20y)/(x+y)} = 24 ⇒ 30x + 20y = 24x + 24y ⇒ 6x = 4y Therefore, x:y = 2:3
Select the related word/letters/number from the given alternatives.
PQRS : TUVW : : MNOP : ?
Select the option that is related to fourth number in the same way as the first number is related to the second number and the fifth number is related t...
Select the set in which the numbers are related in the same way as are the numbers of the following sets.
(NOTE : Operations should be performe...
8: 24:: 38:?
Select the combination of letters that when sequentially placed in the blanks of the given letter series will complete the series.
L L _ _ N O _ ...
If 38 × 34 = 31, 34 × 58 = 25 and 56 × 67 = 43, then 28 × 32 = ?
If 89 # 97 = 135 and 68 # 86 = 96, then 88 # 89 = ?
450 : 30 :: 242 : ?
If 32 @ 10 = 32 and 42 @ 30 = 76, then 28 @ 56 = '?'.