WelWorK MATH1002017F MATHEMATICAL ASSOCIATION OF AMERICA web

WelWorK: MATH-100-2017F MATHEMATICAL ASSOCIATION OF AMERICA webwork / math-160-20171-jones/chthw4/2 h1HW4: Problem 2 Previous Problem List Next (1 point) A car leaves a town at 90 kilometers per hour How long wll it take a second car, traveling at 135 kilometers per hour, to catch the first car ita eaves 1 hour later? Amount of Time (n hours Preview My Answen Answers Submit Answers You have attemphed this problem O times You have 6 atempts remaning Email Instructor MacBook Air 5 6 7 8 9 3

Solution

solution:

In order to catch first car by second they must have travel same distance

therefore for time t

distance travelled by 1st car = 90t

after 1 hour distance travelled by 2nd car = 135 (t-1)

now

135 (t-1) = 90 t

(135-90) t = 135

t = 135/45

t = 3

therefore time taken by second car = 3-1 = 2

Answer: 2 hours