| Direction: In each of these questions one question is given followed by data in three statements I, II and III. You have to study the questions and the data in the statements and decide that the question can be answered with data in which of the statements and mark your answer accordingly. |
| I. A boat covers 24 km in 6 hours upstream. |
| II. The boat covers 24 km in 3 hours downstream. |
| III. The ratio of the speed of boat to stream is 3 |
A) All I, II and III
B) Any two of the three
C) Only I and II
D) Only I and III
E) Only II and III
Correct Answer: C
Solution :
From I. Upstream speed \[=\frac{24}{6}=4\,\text{kmph}\] From II. Downstream speed \[=\frac{24}{3}=8\,\text{kmph}\] Now, from I and II, Speed of the stream \[=\frac{8-4}{2}=2\,\text{kmph}\] From III. Distance is not given. Hence only I and II are sufficient.
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