Question
Statements:Some combs are boxes. All boxes are
mirrors. Conclusions:I. Some boxes are combs. II. Some mirrors are combs. In each of the questions below are given two statements followed by two conclusions numbered I and II. You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of given conclusions logically follows from the given statements disregarding commonly known facts. Give answerSolution
Some combs are boxes (I) ⇒ Conversion⇒ Some boxes are combs (I). Hence conclusion I follow. Some combs are boxes(I) + All boxes are mirrors(A) ⇒ Some combs are mirrors (I) ⇒ Conversion⇒ Some mirrors are combs (I). Hence conclusion II follows. Alternate Method:
A boat can move downstream at 30 km/h and upstream at 18 km/h. If it takes the boatman 10 hours to travel a total of (p + q) km upstream when the stream...
Find the total distance covered by boat in each upstream and downstream in 8 hours if the speed of boat in still water and speed of current is 26 km/h a...
A man takes 2.2 times as long to row a distance upstream as to row the same distance downstream. If he can row 66 km downstream in 2 hours, what is the ...
The ratio of the speed of boat ‘A’ in still water, the speed of boat ‘B’ in still water and the speed of the current is 6:4:2, respectively. If ...
A boat can row downstream at 24 km and upstream 16 km in 8 hours. Then what is the velocity of the current ?
If a boat's downstream and upstream speeds are 30 km/hr and 22 km/hr respectively, and it travels (x + y) km upstream in 10 hours when the stream speed ...
- A boat’s speed in still water is to the stream’s speed as 7:2. If the boat covers 50.4 km downstream in 96 minutes, find its upstream speed.
The speed of current is 18 km/hr. If the speed of the boat in still water had been 7 km/hr more than the original speed, then it would take 8 hours to c...
The speed of a boat in still water and the speed of the stream are in the ratio 7:2. If the boat takes 12 hours to travel 240 km upstream, how long will...
The speed of a boat in still water is 200% higher than the speed of stream. If the boat takes 4 hours to cover 96 km downstream, find the time it will t...