Mike roller skates with a constant speed of 10 miles per hour. How long will he take to travel a distance of 15 miles.

Question

Mike roller skates with a constant speed of 10 miles per hour. How long will he take to travel a distance of 15 miles.

in progress 0
Delwyn 5 years 2021-07-24T03:35:46+00:00 2 Answers 26 views 0

Answers ( )

    0
    2021-07-24T03:37:14+00:00

    Answer:

    So every hour he makes 10 miles.  So he would take 1 and a half hours to go to Mcdonalds 15 miles away.

    Explanation:

    0
    2021-07-24T03:37:41+00:00

    \huge\boxed{{\textsf{90 minutes}}}

    We know that Mike’s speed is \dfrac{10\ \text{miles}}{60\ \text{minutes}} since there are 60 minutes in an hour, and we know that MIke needs to travel 15 miles. We’ll model this using fractions:

    \dfrac{10\ \text{miles}}{60\ \text{minutes}}=\dfrac{15\ \text{miles}}{x\ \text{minutes}}

    We can see that there is a 2:3 ratio here, so we’ll divide the left fraction by 2 and multiply it by 3 to get the right fraction.

    \dfrac{10}{60}\Rightarrow\dfrac{5}{30}\Rightarrow\dfrac{15\ \text{miles}}{\boxed{90\ \text{minutes}}}

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )