Yolanda drove 600 miles from Castleton to Monroe. She returned to Castleton at a 10mi/hr slower average speed. She drove 22 hrs total. What was her average speed in each direction?
2006-09-17 10:26:01 · 3 answers · asked by killy 2 in Science & Mathematics ➔ Mathematics
why are we doing your homework....???? I'll take my 2 points anyway, even though i didnt do the homework, show my work, or turn it in......:)
2006-09-17 10:34:13 · answer #1 · answered by bandaidgirl 3 · 1⤊ 0⤋
Distance = Rate times Time
Trip to Monroe:
600 = R (T) we don't know her rate or time
Trip to Castleton:
600 = (R-10)(22-T) her rate was 10 miles per hour slower, and she had a total trip time of 22 hours, so if she traveled T hours on the first leg of the trip, her return trip would be 22 hours minus T.
Use elimination or substitution to solve the two equations.
Hope this helps. Good Luck.
2006-09-17 10:30:47 · answer #2 · answered by SmileyGirl 4 · 1⤊ 0⤋
60x10=600-----60MILES GO
50x112=600----- 50 MILES RETURN
2006-09-17 10:32:08 · answer #3 · answered by CHRISTOS Y 1 · 0⤊ 1⤋