Please help! Kylie is 231 miles away from Anna. They are traveling towards each other. If Anna travels 9 mph faster than Kylie a

Question

xxMikexx [17]

3 years ago

15

Please help! Kylie is 231 miles away from Anna. They are traveling towards each other. If Anna travels 9 mph faster than Kylie a

nd they meet after 7 hours, how fast was each traveling?

Mathematics

1 answer:

Andrej [43] · Answer 1 · 2022-02-18T10:24:22+03:00

Andrej [43]3 years ago

7 0

A will represent Anna. k will represent Kylie.

7a+7k=231
a=9+k

Substitute for a
7(9+k)+7k=231
63+7k+7k=231
14k=168
k=12

Then plug in the k value
a=9+12
a=21

Final answer: Anna=21 mph, Kylie= 12 mph