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Let the length and speed of the train ‘A’ be ‘l’ metre and ‘s’ m/s, respectively. According to question, l = 10s Also, 12s = 10s + 140 Or, 2s = 140 Or, s = 70 Therefore, length of train ‘A’ = 10s = 700 metres Length of train ‘B’ = 140 × (5/2) = 1750 metres Required time taken = 1750 ÷ 20 = 87.5 second
P, F’s father, has a grandchild, Vartika is the mother of K who has a son N, but K is not the daughter. K has a brother. Vartika and P are married...
How is R related to Q?
Speed of five cars C1, C2, C3, C4 and C5 are compared. Speed of C1 is more than only one car. Speed of C5 is more than four cars. Speed of C4 is more th...
W is the son of S. V is the son of T. W is married to U. U is T’s daughter. How is V related to W?
Answer the questions based on the information given below .
There are seven persons D, E, F, G, H, I and J in a family of three generations. D ...
How is J related to G?
How is J related to L?
How is E related to F?
Which of the following is definitely false?
How O related to Y?