Please help me with this question, thank you!
1 answer:
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Answer:
The speed is 60 mph.
Step-by-step explanation:
distance = 42 miles
Let he drove with speed v and time is t.
distance = speed x time
42 = v t ..... (1)
42 = (v + 10)(t - 1/10) ..... (2)
So, the speed cannot be negative so the speed is 60 mph.