Question

A car travels at an average speed of
68
miles per hour. How many miles does it travel in
4
hours and
15
minutes?

Answer 1

I need help please

Answer 2

well
there are 60 minutes in 1hr
so, 60 is really 15 + 15 + 15 + 15
so, that means, that, there are four 15mins in 60mins or 1hr
meaning that 15 is 1/4 of an hr, or 0.25hr

so 4 hr and 15mins is really 4.25 hr

so, the car travels 68 miles in 1hr, how many in 4.25hr?
well \(\begin{array}{cclll}
miles&hours
\\\hline\\
68&1\\
x&4.25
\end{array}\implies \cfrac{68}{x}=\cfrac{1}{4.25}\)

solve for "x"

Answer 3

i know the answer

Answer 4

289

Answer 5

yep