Antony and lily started moving in opposite directions from the same point at the same time. If Antony was biking with an average 12 mph speed and Lily was walking by 4 mph, how soon the distance between them will be 76 miles?

4 hours and 45 minutes

The number of miles increasing each

hour is 16, 16 times 4 is 64, and to get

to 76, you add an extra 3/4 of an hour

which is 45 minutes.

Hope it helps!

1 x=22.52

2: 65/39=604+39x

65x-39x=604

26x=604

x=604/26

×=23.23