Question
The speed of a boat in still water is 28 km/hr. If the
boat covers 140 km in upstream in 7 hours, then find the time taken by the boat to travel 180 km in downstream.Solution
Let the speed of the boat in still water and the speed of the current be βxβ km/hr and βyβ km/hr, respectively Upstream speed of the boat = (x β y) = 140/7 = 20 km/hr Or, 28 β y = 20 Or, y = 28 β 20 = 8 km/hr Therefore, downstream speed of the boat = 28 + 8 = 36 km/hr Required time taken = 180/36 = 5 hours
Statements:
Some P are Q
All Q are R
Some R are S
Conclusions:
I. Some R are not P
II. All R are P
In the question below there are three statements followed by three conclusions I, II and III. You have to take the four given statements to be true eve...
What is the shortest distance between S and U?
- In the question below some statements are given followed by three conclusions I, II and III. You have to take the given statements to be true even if they ...
Statement:
Some pens are pencils
Only a few pencils are tables
All tables are notebooks
Conclusion:
I. All pens can b...
- Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it app ear s to be at variance ...
Two statements are given followed by two conclusions numbered I& II. Assuming the statements to be true, even if they seem to be at variance with commo...
In the question below there are three statements followed by two conclusions I and II. You have to take the three given statements to be true even if t...
In the question below some statements are given followed by two conclusions I and II. You have to take the given statements to be true even if they see...
Statements : All roses are Daisy.
No Lilly is a rose.
No Daisy is a Tulip.
Conclusions : I . Β No Tulip is a Daisy.
<...