Saturday

January 31, 2015

January 31, 2015

Posted by **Felix Ferrer** on Tuesday, October 2, 2007 at 6:15pm.

- Math -
**DrBob222**, Tuesday, October 2, 2007 at 6:26pmdistance = rate x time

Calculate time for each 50 mile increment. Add the times together to obtain total time.

then 100/total time = average rate. Post your work if you get stuck.

- Math -
**Felix Ferrer**, Tuesday, October 2, 2007 at 7:09pmi can't figure it out???

- Math -
- Math -
**DrBob222**, Tuesday, October 2, 2007 at 7:24pmdistance = rate x time

d for 40 mph vehicle = 50 mi = 40 mi/hr x time.

solve for time for 40 mph car = 50/40 = 5/4 hour.

d for 60 mph car = 50 mi = 60 mi/hr x t

solve for t for 60 mph car = 50/60 = 5/6 hr.

Add the times together.

5/4 + 5/6 = 1.250 + 0.833 = 2.083 hours total time.

distance traveled in total time = 100 miles. Average speed = 100 mi/2.083 hours = ??

**Answer this Question**

**Related Questions**

Math - Can someone please help me? I can't figure out the answer. A motorist ...

Science - Physics - How long would it take you to drive from Houston to ...

Help!...Math... - Two cars leave town going opposite directions. One car is ...

math - 13. If two planes leave the same airport at 1:00 PM, how many miles apart...

math - The Murphy family just drove 300 miles to visit their grandparents. Mr. ...

Math - A motorist traveling 55 mph is being pursued by a highway patrol car ...

math sos. - dURING THE FIRST PART OF A TRIP, A CONOEIST TRAVELS53 MILES AT A ...

algebra - Can someoe please help me figure this out? During the first part of a ...

Calculus, antiderivatives - A student accelerates from rest at a rate of 3 miles...

Statstics - Cities A, B, C and D are equidistant. That is, B is d miles from A, ...