II. The train crosses another train 100 m long coming from the opposit

1.	II. The train crosses another train 100 m long coming from the opposite direction at 72 km/hr in 6.4 sec.1). Only I2). Only II3). Both I and II4). Either I or II
Answer» Let the length of the train be ‘y’ m Considering statement I, Speed of train = length of train/time taken to cross signal post = (y/8) m/sec. Considering statement II, ? Another train is coming from opposite direction, the relative speed is the sum of the individual speeds Speed of other train = 72 km/hr = 72 × 5/18 = 20 m/sec. Using information from statement I, Relative speed = 20 + y/8 Time taken to cross the train = sum of the lengths of train/relative speed ⇒ 6.4 = (y + 100)/(20 + y/8) ⇒ 128 + 0.8y = y + 100 ⇒ 0.2y = 28 ⇒ y = 28/0.2 = 140 m ∴ Both the STATEMENTS are necessary to ANSWER the question

II. The train crosses another train 100 m long coming from the opposite direction at 72 km/hr in 6.4 sec.1). Only I2). Only II3). Both I and II4). Either I or II

Answer»

Let the length of the train be ‘y’ m

Considering statement I,

Speed of train = length of train/time taken to cross signal post = (y/8) m/sec.

Considering statement II,

? Another train is coming from opposite direction, the relative speed is the sum of the individual speeds

Speed of other train = 72 km/hr = 72 × 5/18 = 20 m/sec.

Using information from statement I,

Relative speed = 20 + y/8

Time taken to cross the train = sum of the lengths of train/relative speed

⇒ 6.4 = (y + 100)/(20 + y/8)

⇒ 128 + 0.8y = y + 100

⇒ 0.2y = 28

⇒ y = 28/0.2 = 140 m

∴ Both the STATEMENTS are necessary to ANSWER the question

Discussion

No Comment Found

Related InterviewSolutions

II. The volume of hemisphere is 1500 cubic cm.1). The data in statement I alone is sufficient to answer the question, while the data in statement II alone is not sufficient to answer the question.2). The data in statement II alone is sufficient to answer the question, while the data in statement I alone is not sufficient to answer the question.3). The data in statement I alone or in statement II alone is sufficient to answer the question.4). The data in both the statements I and II is not sufficient to answer the question.
1). if the data given in statement I alone is sufficient to answer the question whereas the data given in statement II alone is not sufficient to answer the question.2). if the data given in statement II alone is sufficient to answer the questions whereas the data given in statement I alone is not sufficient to answer the question.3). if the data in either statement I alone or in statement II alone is sufficient to answer the question.4). if the data in both the statements I and II is not sufficient to answer the question.
Directions: The following questions are accompanied by three statement (A) or (I), (B) or (II), and (C) or (III). You must determine which statement(s) is/are sufficient/necessary to answer the questions.C. One-fourth of the work is done by 8 workers in 12.5 days.1). Any two of them2). Only B3). Either A or C only4). A and C together
II: The difference between the ages of Arbaaz and Salman is 18 years.1). The data either in statement I alone or in statement II alone is sufficient to answer the question.2). The data in statement II alone are sufficient to answer the questions, while the data in statement I alone are not sufficient to answer the question.3). The data in Statement I alone are sufficient to answer the question, while the data in statements II alone are not sufficient to answer the question.4). The data even in both the statements I and II together is not sufficient to answer the question.
II. The truck covers a distance of 550 m in 1 minute and the bus covers a distance of 33 km in 45 minutes1). If the data given in statement I alone is sufficient to answer the question whereas the data given in statement II alone are not sufficient to answer the question.2). If the data given in statement II alone is sufficient to answer the question whereas the data given in statement I alone are not sufficient to answer the question.3). If the data in either statement I alone or in statement II alone is sufficient to answer the question.4). If the data in both the statements I and II is not sufficient to answer the question.
1). The data in Statement I alone are sufficient to answer the question, while the data in statements II alone are not sufficient to answer the question.2). The data in statement II alone are sufficient to answer the questions, while the data in statement I alone are not sufficient to answer the question.3). The data in both the statements I and II together are necessary to answer the question.4). The data even in both the statements I and II together is not sufficient to answer the question.
II. x is divisible by 91). If statement I alone is sufficient to answer the question, but statement II alone is not sufficient.2). If statement II alone is sufficient to answer the question, but statement I alone is not sufficient.3). If both the statements I and II together are needed to answer the question.4). If either statements I alone or statement II alone is sufficient to answer the question.
1). If the data given in the statement I alone is sufficient to answer the question whereas the data given in statement II alone is not sufficient to answer the question.2). If the data given in the statement II alone is sufficient to answer the question whereas the data given in statement I alone is not sufficient to answer the question.3). If the data in either statement I alone or in statement II alone is sufficient to answer the question.4). If the data in either statement I & II is not sufficient to answer the question.
1). The data either in statement I alone or in statement II alone is sufficient to answer the question.2). The data in statement II alone are sufficient to answer the questions, while the data in statement I alone are not sufficient to answer the question.3). The data in both the statements I and II together are necessary to answer the question.4). The data even in both the statements I and II together is not sufficient to answer the question.
1). If the data in statement l alone is sufficient to answer the question, while the data in statement II alone is not sufficient to answer the question.2). If the data in statement II alone is sufficient to answer the question, while the data in statement l alone is not sufficient to answer the question.3). If the data either in statement l alone or in statement Il alone is sufficient to answer the question.4). If the data given in both statements I and II together is not sufficient to answer the question.