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we know that speed = (Distance)/(Time) From statement I Downstream speed = (54/3) = 18 km/hr Upstream speed = (54/6) = 9 km/hr Speed of stream = (1/2) (Downstream - upstream speed) = (1/2) (18 - 9) = 4.5 km/hr Therefore, both the statements are necessary to answer the question.
Train A crosses another train B running in the opposite direction in 180 seconds. What is the speed of the train A?
Statement I - Speed o...
There are 7 people in a group. Average age of the group decreases by 5 when two more people join the group. Find the average age of the new group.
<...What was the sum of the ages of the father and the daughter 5 years earlier?
A. Ratio of the father’s present age to...
What is the cost of fencing a rectangular plot?
I. The length of the plot is thrice its breadth.
II. The cost of fencing is Rs. 16 per met...
What is the value of a two digit number?
Statement I: The sum of the digits of the number is 9.
Statement II: The digit at the tens...
Rohit, Dhawan, Virat, Dhoni and Mayank are five friends. Their mean age is 28. What is the age of Virat?
Statement I : Rohit’s age is 28
Find the Income of Suleiman?
Statement I: Suleiman's income exceeds Salman's by Rs. 8000, and Salman's savings amount to Rs. 15,000.
State...
What is the speed of boat A in still water?
Statement I: Boat A takes 4 hours to travel 48 km downstream, while the speed of the current is 3 km/...
What is marked price of the product?
Statement I – After giving the 10% discount on mark price the shopkeeper make a profit of Rs. 45 by sell...
What is the time taken by train to go from Station A to Station B?
Statement I: If the train increases its speed by 20%, then it reaches 40 m...