Bob, Carol, Ted, and Allison all live in Brewster. They are planning a trip to the state campground at Rocky Beach. The Group is thinking about taking a new interstate highway all the way to Rocky Beach. Their car averages 30 miles per gallon and gas costs $2.25 per gallon. The total distance to Rocky Beach and back to Brewster is about 500 miles. Show the mathematics you used to make a reasonable estimate and explain how you arrived at your answer.
2006-11-09 07:30:36 · 13 answers · asked by adrian43092 2 in Science & Mathematics ➔ Mathematics
An estimate of what?
Oil use = 500 miles / 30 miles/gallon = 16.7 gal
$$ = 16.7 gal * 2.25 $/gal = $37.6 total cost of trip.
2006-11-09 07:37:26 · answer #1 · answered by Dr. J. 6 · 1⤊ 0⤋
Their car averages 30 miles per gallon and gas costs $2.25 per gallon => Their car averages 30 miles per $2.25
( 500 : 30 ) x $2.25 = $37.5
it cost $37.5 them to drive 500 miles to Rocky Beach and back to Brewster
2006-11-09 15:42:45 · answer #2 · answered by Anonymous · 0⤊ 0⤋
umm... do u mean show an estimate of how much gas was used?
30/1 x 500/x (b'coz in 1 gallon the car can go up to 30 miles, and u need to figure out how many gallons u need for 500 miles)
cross multiply
500 = 30x
divide both sides by 30
x=16.66666666
so u round that and u can say that they will need about 17 gallons gas needed
for the cost it wud be 16.6666 x 2.5
wwhich wud give u $37.5
hope this helps!!!
2006-11-09 15:34:28 · answer #3 · answered by D.P 3 · 2⤊ 0⤋
500 miles / 30 miles per gallon = 16 2/3 gallons
16 2/3 gallons * 2.25 dollar per gallon = $37.5
2006-11-09 15:35:08 · answer #4 · answered by xorosho 3 · 1⤊ 1⤋
Ok, here's what we know:
500 miles for the trip
30 miles/gallon of gasoline
2.25 dollars/gallon of gasoline
So we need to determine the number of gallons of gasoline to travel 500 miles:
500 miles / 30 MPG = 16 2/3 gallons
Now we just need to figure out how much 16 2/3 gallons cost:
16.6667 * 2.25 = 37.50
If you want it all in one equation:
500 / 30 * 2.25 = 37.50
Hope this helps!
2006-11-09 15:36:13 · answer #5 · answered by disposable_hero_too 6 · 1⤊ 2⤋
The total miles is 500 + 500 = 1,000 miles
They will be using 1,000 miles/ 30 miles per gallon = 33.3 gallons
They will be spending about 33.3 gallons * 2.25 dollars per gallon
= $74.93
edit : oops half that...I thought that was the one way mileage
2006-11-09 15:40:30 · answer #6 · answered by just browsin 6 · 0⤊ 1⤋
Start with 500 mi. Multiply by 1 gal/30 mi. The mi. cancel, and you get the number of gal they'll burn. Next multiply by $2.25/1 gal. The gals. cancel, giving the dollars cost of the trip.
2006-11-09 15:35:03 · answer #7 · answered by steve_geo1 7 · 1⤊ 0⤋
Variables:
your problem: $2.25x
1)find X: 500 miles/30mpg=16.666666 *round up* 17 gallons for the trip.
2)2.25(17)= 38.25$
3) it should cost them 38.25$ to make the trip and back. if its only one way, divide that answer by 2 (~19.12$). thats my best shot...its been awhile.
2006-11-09 15:47:06 · answer #8 · answered by Kendrix:Evolution 2 · 0⤊ 0⤋
30(miles per gallon) times 2.25(price per gallon) is equal to 67.50.
500(miles to beach and back) divided by 30 (miles per gallon) is 16.6666...( which is how many times you will fill the tank)
SO 500 divided by 30 multiplied by 67.50 (how much it takes to fill up one tank of gas) is equal to 1125.
2006-11-09 15:42:44 · answer #9 · answered by ? 2 · 0⤊ 0⤋
This is basic, basic math.
What estimate are you looking for?
How many gallons of gas they used? 16.67
How much did the trip cost? $37.51
You have to figure out it and show YOUR work.
2006-11-09 15:36:29 · answer #10 · answered by Joe S 6 · 1⤊ 0⤋