Wednesday

October 1, 2014

October 1, 2014

Posted by **Dawn** on Sunday, March 7, 2010 at 7:32pm.

-Car A travels from Barrie to Subuiry at an average speed of 90km/h

-Car B travels from Subury to Barrie at an average speed of 80km/h

-Barrie and Subury are 300 km apart

(HINT: Recall that Distance=SpeedXTime. THink of the distance that each car is from ONE of the cicties when stetting up youre equations)

a) What does the point of intersection mean in this case?

b) If they left at exactly 9:35 am, at what time will they meet?

- Math -
**Damon**, Sunday, March 7, 2010 at 7:46pmSay they travel for t hours

Car A goes 90 * t km

Car B goes 80 * t km

If car A goes distance d, then car B goes 300-d

d =90 t

80 t = 300 - d

80 t = 300 - 90 t

170 t = 300

t = 1.764 hours

1 hour and .764*60 minutes

= 1 hour and 45.882 minutes

call it 1 hour and 46 minutes although we could figure out the seconds

9:45 + 1 hr = 10:45

10:45 + 46 minutes = 11:00 + 31 minutes

so 11:31

**Answer this Question**

**Related Questions**

physics - PLEASE HELP!! I HAVE A TEST TOMORROW!! if Q=30 uC, q=5.0 uC, and d=...

Math - Problem Solving Work Backward The test that Keyshawn's class took ...

math - The test Keyshawn's class took finished at 10:30 A.M. The first part of ...

math - I have a test tomorrow on inerior angles and need it explianed more thsn ...

trig - hi, I have a placement test coming up tomorrow, and I'm pretty confident ...

Didn't do research paper - I have a research paper due TOMOROW that my English ...

Jishka Staff - Is you teacher who teaches AP Biology still sick last time I ...

Help math!! - 15 students took a science test. the average score was 88.0. later...

math - 15 students took a science test. the average score was 88.0. later in the...

English - Thank you very much for helping me. Here are some more sentences on ...