I did it by dividing 800 by 75 and I got 10.66
The computer says this answer is wrong.
What is the correct answer?
Thank you very much and I will be choosing a best answer tomorrow
2007-09-14 13:59:20 · 14 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
(800 km)/(75 km/hr) = 10.667 hrs
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Ideas: Use dimensional analysis.
2007-09-14 14:04:41 · answer #1 · answered by sahsjing 7 · 0⤊ 0⤋
Scale it down then up again . Because the speed is constant, the distance is proportional to the speed. 75 km in 90 minutes 25 km in 30 minutes (dividing by 3) 125 km in 150 minutes (multiplying by 5) so 2hrs 30 min
2016-04-04 21:29:23 · answer #2 · answered by Anonymous · 0⤊ 0⤋
time = distance/rate
time = 800/75 = 10 2/3 hours
2007-09-14 14:05:13 · answer #3 · answered by ironduke8159 7 · 0⤊ 0⤋
well use the formula (d=rt) distance=rate X time
so set up as 800=75t
then divide by 75 on both sides and the answer should be 10.66
i think its should be 10 hrs. and 66 mintues
2007-09-14 14:30:01 · answer #4 · answered by Anetti 2 · 0⤊ 0⤋
distance = velocity * time
time = distance/velocity = 800 km/75 km/hr=10.66 hours
you are correct
2007-09-14 14:05:41 · answer #5 · answered by careyschwartz 2 · 0⤊ 0⤋
It's 10 2/3. The computer wouldn't have taken the answer because it's rounded.
2007-09-14 14:06:22 · answer #6 · answered by sargeantb2 3 · 0⤊ 0⤋
10 and 2/3 is right.
2007-09-14 14:05:53 · answer #7 · answered by Racccchel. 4 · 0⤊ 0⤋
That's because that isn't how we measure time. The correct answer is 10 hours 40 minutes (.66 hours is 40 min).
2007-09-14 14:15:19 · answer #8 · answered by Reggie B 2 · 0⤊ 0⤋
u are right nearly it is
10.666666666666666666666666666666666666666666
ie 10 2/3 hrs=10hrs 40 mins
Someone forget to give the driver a break.
2007-09-14 14:07:19 · answer #9 · answered by GOLD-FLAW 2 · 1⤊ 0⤋
800/75=10.66
2007-09-14 14:11:12 · answer #10 · answered by Jeannie M 1 · 0⤊ 0⤋