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A man travels a distance of 10 miles at 20 miles per hour and returns over the same route at 30 miles per hour. What is his average speed for the round trip in miles per hour?

Created: 7 years ago | Updated: 5 days ago

Updated: 5 days ago

Mercantile Bank Ltd Mercantile Bank Ltd - Officer - 2004 গণিত গড় (Average)

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প্রশ্ন: A man travels a distance of 10 miles at 20 miles per hour and returns over the same route at 30 miles per hour. What is his average speed for the round trip in miles per hour?

let, x = 20 miles/hr

y = 30 miles/hr

we know,

average speed = 2xy/(x + y)

= 2*20*30/(20 + 30)

= 1200/50

= 24 miles/hr (ans)

7 years ago

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Md Azizur Rahman

FOUNDER OF SATT

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A man travels a distance of 10 miles at 20 miles per hour and returns over the same route at 30 miles per hour. What is his average speed for the round trip in miles per hour?

প্রশ্ন: A man travels a distance of 10 miles at 20 miles per hour and returns over the same route at 30 miles per hour. What is his average speed for the round trip in miles per hour?

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