BrainZeal

Puzzle Plex

Today's Puzzle

Today was Catherine´s birthday. She turned 24. Catherine is twice as old as Ryan was when Catherine was as old as Ryan now. How old is Ryan now?..................

1) A motorboat, whose speed in 20 km/hr in still water goes 20 km downstream and comes back in a total of 2 hours 20 mins . The speed of the stream (in km/hr) is:

A) 7

B) 6

C) 5

D) 10

Answer & Explanation

2) A man takes thrice as long to row a distance against the stream as to row the same distance in favour of the stream. The ratio of the speed of the boat (in still water) and the stream is:

A) 2:1

B) 1:4

C) 3:1

D) 1:2

Answer & Explanation

3) A man rows to a place 48 km distant and comes back in 21 hours. He finds that he can row 4 km with the stream in the same time as 3 km against the stream. The rate of the stream is:

A) 1/5

B) 1/2

C) 2/3

D) 1/4

Answer & Explanation

4) A boat running downstream covers a distance of 16 km in 1 hour while for covering the same distance upstream, it takes 4 hours. What is the speed of the boat in still water?

A) 9

B) 10

C) 7

D) 8

Answer & Explanation

5) Speed of a boat in standing water is 9 kmph and the speed of the stream is 1.5 kmph. A man rows to a place at a distance of 105 km and comes back to the starting point. The total time taken by him is:

A) 24 hrs

B) 15 hrs

C) 22 hrs

D) 20 hrs

Answer & Explanation