An athlete crosses 1200m distance in 9 minutes. What is his speed (in km/h)?
- A8
- B9
- C7
- D6
Solution & Step-by-step Explanation
Given:
Distance =1200m=
1000
1200
km=1.2km
Time =9minutes=
60
9
hours=
20
3
hours
Speed is given by the formula:
Speed=
Time
Distance
Substituting the values:
Speed=
20
3
1.2
=1.2×
3
20
=
3
24
=8km/h
Distance =1200m=
1000
1200
km=1.2km
Time =9minutes=
60
9
hours=
20
3
hours
Speed is given by the formula:
Speed=
Time
Distance
Substituting the values:
Speed=
20
3
1.2
=1.2×
3
20
=
3
24
=8km/h