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Solution: What was his original speed?

What was his original speed?

Problem Statement:

A boy on his bicycle intends to arrive at a certain time to a town that is 30 km away from his home. After riding 10 km, he rested for half an hour, and as a result he was obliged to ride the rest of the trip 2 km/hr faster. What was his original speed?

Problem Answer:

The boy original speed is 8 km/hr.

Solution:

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