Question

two bicycle riders start from the same point and ride in opposite directions. one rider is moving twice as the other. in 3 hours, they are 72 miles apart. find the rate of each rider.24​

Answer 1

Let the speed of one rider = x

The speed of the second rider would e 2x ( twice as fast)

The total speed of the two riders would be x + 2x = 3x

Speed = Distance / time

Using the numbers:

3x = 72/3

Simplify:

3x = 24

Divide both sides by 3:

x = 8

The speed of one rider is 8 miles per hour

The speed of the second rider is 2(8) = 16 miles per hour.