exam Maths Puzzle

Walking at 3/4 of his usual place, a man reaches his office 20 minute late. Find his usual time?

A.

2 hr

B.

1 hr

C.

3 hr

D.

1.5 hr

Read Solution (Total 1)

new speed=3/4 (original speed)
so,new time=4/3(original time)
now,new time -original time=20
putting the value and solving,we get 60 min=1hr (ans)
10 years agoHelpfull: Yes(0) No(0)

exam Other Question

A and B start running simultaneously. A runs from point P to point Q and B from point Q to point P. A's speed is 6/5 of B's speed. After crossing B, if A takes 5/2 hr to reach Q, how much time does B take to reach P after crossing A?

A.

3 hr 6 min

B.

3 hr 16 min

C.

3 hr 26 min

D.

3 hr 36 min A jet plane is rising vertically with a velocity of 10m/s. It has reached a certain height when the pilot drops a coin, which takes 4sec to hit the ground. Assuming that there is no resistance to the motion of the coin, the height of the place and the velocity of the coin on impact with the ground are:

A.

38.4 m, 28.7 m/s

B.

38.4 m, 29.2 m/s

C.

26.5 m, 13.5 m/s

D.

26.5 m, 28.7 m/s