Starting at home, Ishaan traveled uphill to the gift store for 18 minutes at just 10 mph. He then traveled back home along the s
ame path downhill at a speed of 30 mph. What is his average speed for the entire trip from home to the gift store and back?
2 answers:
Answer: 
Step-by-step explanation:
Time taken to travel from uphill to the gift store =18 minutes
∴ 
Speed of Ishaan from uphill to the gift store =10 mph
We know that 

We he traveled back, the distance remains same
Thus 
We know that



The answer would be 15 miles per hour.
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