I wish I knew how to do math. Pay attention in school, kids. I feel pathetic that I don't even know how to do a simple problem like this...I've always been great with words and art, but numbers are like a foreign language...;-(....
2007-03-10 10:09:53 · 5 answers · asked by Ayudame 2 in Science & Mathematics ➔ Mathematics
3mph means you do 3 miles in an hour. so :
3 miles in 60 min
.4 miles in x min
then
3x = 60 * 0.4
3x = 24 / divide by 3
x = 8
answer
you do .4 miles in 8 minutes
2007-03-10 10:16:38 · answer #1 · answered by Qualtai 3 · 0⤊ 0⤋
0.4 miles / 3 mph = 2/15 hours or 8 minutes.
2007-03-10 18:13:24 · answer #2 · answered by Newbody 4 · 0⤊ 0⤋
3 miles/1 hour = 0.4 miles / x hours
Cross-multiply these by taking the top part of one side times the bottom part of the other side. Then vice versa.
3x = 0.4 Now divide both sides by 3.
x = 0.13 hours
2007-03-10 18:15:32 · answer #3 · answered by ecolink 7 · 0⤊ 0⤋
If you take the time in a constant speed, it will take 8 minutes
2007-03-10 18:21:32 · answer #4 · answered by El Fer 2 · 0⤊ 0⤋
3miles/60min = 0.4miles/x
if 3miles in 1 hr than 1 mile in 20 minutes
1mile in 20min / 0.4miles
2007-03-10 18:14:46 · answer #5 · answered by a 3 · 0⤊ 0⤋