One student takes 20 mins to reach school if he goes at a
speed of 15kmph .At what speed should he go to reach in
15 mins ?
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Answer / sabarish
ans: 20 kmph
let d be distance .
d / (1/3) = 15 thrfore .. d = 5km
to travel 5 km in 15 min he must travel in speed of..
5 / (1/4) = 20 kmph
| Is This Answer Correct ? | 36 Yes | 0 No |
Answer / mari
Distance = speed*time
=15*20/60(convert mins to hours)
=5 km
Distance=5 km;
time =15/60(convert mins to hours)
speed =distance/time
=5*15/60
=20 km/hr
| Is This Answer Correct ? | 17 Yes | 0 No |
Answer / lavanya
Speed1 * time1=Speed2 * Time2
15 *20=x *15
Then,x=20kmph
Ans : 20kmph
| Is This Answer Correct ? | 11 Yes | 0 No |
speed =15kmph
distance=speed*time
=15*(20/60)=5km
speed=distance/time
=5/(15/60)=20kmph
| Is This Answer Correct ? | 9 Yes | 0 No |
Answer / s chand
total 5km distance
5km in 15 min
therefore 20kmph
| Is This Answer Correct ? | 8 Yes | 0 No |
Answer / surya teja challapalli
Distance travelled by the student in 20 mins=15*(20/60)=5 km
In 15 min student must travelled with speed,=5/(15/60)
=5*(60/15)
=5*4= 20km/hr.
| Is This Answer Correct ? | 7 Yes | 1 No |
Answer / hemant singh
speed1*time1=Distance = speed2*time2
20*15 = speed2*15
speed2=20 kmph
| Is This Answer Correct ? | 3 Yes | 0 No |
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