exam Maths Puzzle

Walking at the rate of 4kmph a man cover certain distance in 2hr 45 min. Running at a speed of 16.5 kmph the man will cover the same distance in.

A.

12 min

B.

25 min

C.

40 min

D.

60 min

Read Solution (Total 2)

Distance = Speed * Time
2 hr 45 min =11/4 hr
D=4*11/4 =11 km
New speed = 16.5
Time = D/s = 11/16.6=40 min
7 years agoHelpfull: Yes(2) No(0)

Distance = Speed * Time
2 hr 45 min =11/4 hr
D=4*11/4 =11 km
New speed = 16.5
Time = D/s = 11/16.5=40 min
7 years agoHelpfull: Yes(2) No(0)

exam Other Question

A milk vendor has 2 cans of milk .The first contains 75% water and the rest milk. The second contains 50% water. How much milk should he mix from each of the container so as to get 12 litres of milk such that the ratio of water to milk is 3:5?

A.

6 litres

B.

1 litres

C.

8 litres

D.

7 litres A train 120m in length passes a pole in 12sec and another train of length 100m travelling in opposite direction in 10sec. Find the speed of the second train in km per hour.

A.

43.2 km/hr

B.

43 km/hr

C.

44 km/hr

D.

43.5 km/hr