Fast shuttle : 5 + 0.25m
steady shuttle : 2 + 0.50m
when will they be equal.....so set them equal and solve for m, the number of miles
5 + 0.25m = 2 + 0.50m
5 - 2 = 0.50m - 0.25m
3 = 0.25m
3 / 0.25 = m
12 = m <=== so they will cost the same at 12 miles
38*75 = 2850 that is the answer
Answer:
5 out of 5 ? I'm not sure
you can reason this concretely.
suppose you start with 60 bugs.
1/5 of the 60 bugs is 12 bugs
divide 12 bugs into 3 equal groups. each group has 12/3 = 4 bugs.
the fraction now is 4/60
in lowest terms this is 1/15
0.5 x 14 x 9 square inches (0.5 x 14) x 9 square inches (7) x 9 square inches so the answer is 63 square inches