Quiz Discussion

A and B can cover a 200 m race in 22 seconds and 25 seconds respectively. When Av finished the race, then B is at what distance from the finishing line ?

• 1] 24 m
• 2] 30 m
• 3] 48 m
• 4] 54 m

A man starts in a boat from A toward B against the stream. After reaching a point M on the way, he throws a rubber ring into the water. He takes 8 minutes from then to reach his destination and the ring exactly A at that moment. If the distance between  A and B is 4 km, then find the speed of boat in still water

• 1]

  15 kmph

• 2]

  12 kmph

• 3]

  30 kmph

• 4]

  45 kmph

A and B take part in a 100 metres race. A runs at 5 km an hour. A gives B a start of 8 metres and still beats him by 8 seconds. The speed of B is ?

• 1] 4.45 km/hr
• 2] 4.14 km/hr
• 3] 4.15 km/hr
• 4] 4.25 km/hr

In a 200 m race, A beats B by 35 m or 7 seconds. A's time over the course is-

• 1] 40 sec
• 2] 47 sec
• 3] 33 sec
• 4] None of these

In a 100 m race, A can give B 10 m and C 28 m. In the same race B can give C:

• 1] 18 m
• 2] 20 m
• 3] 27 m
• 4] 9 m

In a 800 metre race, A defeated B by 15 seconds. If A's speed was 8 km/hr, the speed of B was -

• 1]

  16/27 km/hr

• 2]

  27/16 km/hr

• 3]

   km/hr

• 4]

   km/hr

In a 400 m race, A gives B a start of 5 seconds and beats him by 15 m. In another race of 400 m, A beats B by 7 1/7 seconds. Their respective speed are -

• 1] 6 m/sec, 7 m/sec
• 2] 5 m/sec, 7 m/sec
• 3] 8 m/sec, 7 m/sec
• 4] 9 m/sec, 7 m/sec

In a race of 200 m, A can beat B by 31 m and C by 18 m. In a race of 350 m, C will beat B by:

• 1]

  22.75 m

• 2]

  25 m

• 3]

  19.5 m

• 4]

  m

In a kilometre race, A, B and C are three participants. A can give B start of 50 m and C a start of 69 m. The start which B can allow C, is -

• 1] 17 m
• 2] 18 m
• 3] 19 m
• 4] 20 m

Gopal , Ganesh and Giri start from point A and run around a circular path at speed of 10 kmph, 14 kmph and 6 kmph respectively. Gopal & Giri run in the same direction and Ganesh run in the opposite direction. The length of track is 20 km. In how much time will all three of them be together for the first time?

• 1]

  3 hr

• 2]

  4 hr

• 3]

  5 hr

• 4]

  6 hr