3 years ago

a car covers a distance of 490 km with a speed of 70km and then covers a speed of 90km calculate its average speed

1 answer:

3 0

Average speed = total distance divided by total time.

In the first part, the car covered 490 km in 7 hours, but I think you mistyped the second part (“then covers a speed of 90km”) and a critical piece is missing to find the total distance and time.

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$\bf \qquad \qquad \textit{direct proportional variation}\\\\
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\begin{array}{llll}
k=constant\ of\\
\qquad variation
\end{array}\\\\
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