You first need to know how much miles it takes on the trail. Then you look 20 x 3 is one hour. And if the 3 group said it takes 2 hours waking for them its like this, the first group takes one hour to go thru the trail, but the second group takes and hour and half the 3 group takes 2 hours.
I wish this helps. :)
In fractions, the shaded area would equal 1/2
or 0.5
or 50%
To find the area of any rectangle you multiply length times width.
8,1/2*11
17/2*11/1
187/2
93.5 or 93, 1/2.
For the second bit you just divide 1000 by 93.5. 1000/93.5=10.7 So ten pieces. Hope this helps! <span />
