Question

On Alberto's drive to his aunt's house, the traffic was light and he drove 45km trip in 1 hour. However the return trip took him 2 hours. What was his average trip for the round trip?
Pls ans fast.​

Answer 1

Answer:

30km/h

Explanation:

total speed =45+45=90km

total time taken=2+1=3hours

Answer 2

$\bf\red{ Answer - }$

$\bf \pink{Given - }$

$\bf s = 45 km$

$\bf t_1 = 1 hour$

$\bf t_2 = 2 hours$

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$\bf \pink{To \: find -}$

Average speed

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$\bf\pink {Formula \: used -}$

$\boxed{\bf{\underline{\underline\red{Average \: speed} = \green{\dfrac{Total \: distance}{Total \: time}}}}}$

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$\bf\pink{ Solution -}$

The car starts and again comes to the initial position,

Total distance = $\bf 2 \times s$

Total distance covered =$\bf 2 \times 45 = 90 km$

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Total time - 2hr + 1hr = 3hr

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$\bf Average \: speed = \dfrac{Total \: distance}{Total \: time}$

$\bf Average \: speed = \cancel \frac{90km}{3hr}$

$\bf = 30 km/hr$

$\underline{\bf\red{Average \: \: speed \: \: for \: \: trip = 30 km/hr}}$

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