Problema Solution
Two friends are surfing at a popular beach. Jorell is paddling out on his board, going 4 kilometers per hour. At the same time, 3 kilometers directly in front of Jorell, Levon has caught a big wave and is riding it back in at a rate of 26 kilometers per hour. In how much time will the two surfers pass each other?
Answer provided by our tutors
let
v1 = 4 km/h the speed of Jorell
v2 = 26 km/h the speed of Levon
d = 3 km
t = the time of the surfing before they pass each other
since speed = distance/time => distance = speed*time
v1*t + v2*t = d
4t + 26t = 3
by solving the equation we find
t = 0.1 h = 0.1*60 min = 6 min
click here to see the step by step solution of the equation
the two surfers will pass each-other in 6 minutes.