Quiz Discussion

In 100 m race, A covers the distance in 36 seconds and B in 45 seconds. In this race A beats B by:

• 1] 20 m
• 2] 25 m
• 3] 22.5 m
• 4] 9 m

A runs 1 2/3 or  times as fast as B. If A gives B a start of 80 m, how far must the winning post be so that A and B might reach it at the same time?

• 1] 200 m
• 2] 300 m
• 3] 270 m
• 4] 160 m

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

In a 100 m race, A can beat B by 25 m and B can beat C by 4 m. In the same race, A can beat C by:

• 1] 21 m
• 2] 26 m
• 3] 28 m
• 4] 29 m

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 500 m race, the ratio of the speeds of two contestants A and B is 3 : 4. A has a start of 140 m. Then, A wins by:

• 1] 60 m
• 2] 40 m
• 3] 20 m
• 4] 10 m

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

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

In a 200 metres 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

Two bike riders ride in opposite directions around a circular track, starting at the same time from the same point. Biker A rides at a speed of 16 kmph and biker B rides at a speed of 14 kmph. If the track has a diameter of 40 km, after how much time (in hours) will the two bikers meet?

• 1]

  6.52

• 2]

  8.14

• 3]

  4.18

• 4]

  5.02