Question

2. Two bicycles depart from Miami Beach going in opposite directions. The first bicycle is traveling at 10 miles per hour. The second bicycle travels at 5 miles per hour. How long does it take until the bikes are 45 miles apart?

Answer 1

is the answer 9 hours

Answer 2

how do u do it?

Answer 3

is that the right answer

Answer 4

yea

Answer 5

see when the bicycles go in opposite direction their speeds are subtracted, and the distance between them is 45 hence time = distance /speed
45/10-5= 9 hrs

Answer 6

distance = speed * time

say, it took "t" hours for them to be 45 miles apart

in t hours, First bicycle going at 10 mph, travels a distance : 10 * t
in t hours, Second bicycle going at 5 mph, travels a distance : 5 * t

then, both of them are 45 miles apart :
10t+5t = 45
=> t = 45/15 = 3 hrs