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October 21, 2014

October 21, 2014

Posted by **lexis green** on Monday, May 21, 2012 at 7:37pm.

- math -
**Reiny**, Monday, May 21, 2012 at 8:39pmlet the number of cars be x

1st trip:

number of people = 3x + 7

return trip:

number of people = 4x + 2

4x + 2 = 3x + 7

x = 5

So there were 5 cars

the number of people was 3(5) + 7 = 22

- math -
**maths**, Monday, July 7, 2014 at 5:15ama sack contain 10 blue and 6 red crayons another sack contains 9 blue and 12 red crayons two crayons are drown at random without replacement from each sack. what is the probability that all the four crayons are blue? exactly one of the four crayons is red

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