Quantitative Aptitude

Data Sufficiency 2

Directions to Solve

Each of the questions given below consists of a question followed by three statements. You have to study the question and the statements and decide which of the statement(s) is/are necessary to answer the question.

1. 

What is the speed of stream ?

I. The boat covers 24 km in 6 hours moving upstream.

II. The boat covers 24 km in 3 hours moving downstream.

III. The ratio between the speed of boat and stream is 3 : 1 respectively.
A. Any two of the three
B. I and II only
C. II and III only
D. I and III only
E. All I, II and III
2. 

What is the speed of the boat in still water ?

I. The speed downstream is 12 kmph.

II. The speed upstream is 4 kmph.

III. In a to and fro journey between two points, the average speed of the boat was 6 kmph.
A. I and II only
B. All I, II and III
C. III, and either I or II
D. Any two of the three
E. None of these

Overview

Exercise