You and a freind are riding bycicles. You ride for 80 minutes at a speed of 15 miles per hour. Your friend rides the same amount at a speed of 12 miles per hour. How many miles did each of you travel?
2007-12-25 12:46:19 · 3 answers · asked by Love...love....love... 3 in Education & Reference ➔ Homework Help
Really, though, the way you have it phrased, you will both have travelled an equal distance, that being 20 miles.
I suppose, though, that you want the distance each of you has travelled during 80 minutes. Turn an hour into 60 minutes, and it will become easy. For you it will be 15/60 (1/4) x 80 = 20. For your friend it will be 12/60 (1/5) x 80 = 16.
Always pay attention to obviously even divisors on future tests, including the SAT.
2007-12-25 17:18:54 · answer #1 · answered by obelix 6 · 1⤊ 0⤋
80 minutes = 4/3 hours
15*4/3=20 miles
12*4/3=16 miles
2007-12-25 12:54:30 · answer #2 · answered by DANIEL G 6 · 1⤊ 0⤋
For each person, convert the 80 minutes to a decimal expression of time in hours, and multiply by the rate of speed.
2007-12-25 12:54:44 · answer #3 · answered by Ralfcoder 7 · 1⤊ 1⤋