Question
A boat covers some distance downstream in 1 hour. It
covers 3/2 hours. If the velocity of the stream is 3 kilometers per hour, then what will be the velocity of the boat in still water?Solution
15. Let the speed of boat in still water =B and speed of stream =S Given stream =S=3km/h Speed of boat in downstream =B+S, and time =1 hour. Then Distance = (B+S) Ă—1 Speed of boat in upstream = B-S and time =1.5h Then distance = (B-S) Ă—1.5 ATQ- (B+S) Ă—1=(B-S) Ă—1.5 2B+2S=3B-3S B=5S B=5Ă—3=15km/h
Five salesmen A, B, C, D and E are sitting in a meeting around a circular table. A is to the immediate left of E. C is to the immediate left of B. D is ...
Select the Venn diagram that best represents the relationship between the following classes.
Rivers, Ganga, Water bodies
Three Statements are given followed by four conclusions numbered 1, 2, 3,and 4. Assuming the statements to be true, even if they seem to be at variance ...
Select the set in which the numbers are related in the same way as are the numbers of the following sets. (NOTE: Operations should be performed on the w...
Statements:
1. Some mammals are animals.
2. All animals are birds.
Conclusions:
1. All birds are animals.
2. Some...
If in a certain language, “Control content on” is coded as “po rw sx” and “on website activists” is coded as “vz po qa” and “Control w...
Which of the following letter-clusters can replace the question mark (?) in the given series to make it logically complete?
DNU, ?, NXE, SCJ, XHO
Select the number from among the given options that can replace the question mark (?) in the following series.
86, 74, 62, 54, ?, 42, 38
Which of the following fundamental rights has been given to Indian citizen only?
On a farm, there are as many men as oxen. There are twice as many hens as there are men and three times as many cows as oxen. The total head count is 14...
Relevant for Exams:
