The boy was riding a bicycle at a speed of 10 km / h. After 3 hours, he arrived at the destination. How many km.
| November 21, 2020 | education
The boy was riding a bicycle at a speed of 10 km / h. After 3 hours, he arrived at the destination. How many km. did he pass if he took an hour to rest on the way?
Given:
t = 3 h
t rest = 1 h
V = 10 km / h
S =?
Decision:
td = t – t rest = 3 – 1 = 2 h // travel time
S = speed * travel time = V * td = 10 * 2 = 20 km // path length
Answer: 20 km
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