Posted by **Bri** on Sunday, March 17, 2013 at 4:43pm.

MS Wilkens went to the gas station to fill her car. Her gas tank is 20% full.

The cost of gas is $4.29 per gallon. How much will itcost to fill the tank? Use the conversion 1 gallon=231 in cubed.

They showed a pic. of a tank with length=1.75ft

width=1.25 ft

height=11 in

I did v=bh

v=lwh v=1.75(1.25)11 v=24.0625 ft cubed

12 in=1ft

24.0625(12)=288.75 in cubed

288.75 in cubed/213 in cubed= 1.25 gallons

now I am cunfused

80% of 1.25= gallons left to fill tank

.80(125)= 1 gallon left to fill tank

1 gallon =$4.29 It will cost$4.29 to fill the tank

PLEASE HELP, did I do this correctly.

- Math- PLEASE HELP -
**Steve**, Sunday, March 17, 2013 at 5:31pm
you cannot convert ft^3 to in^3 by multiplying by 12.

1 ft = 12 in, so

1 ft^3 = (12 in)^3 = 1728 in^3

24.0625 * 1728 = 415890 in^3 = 180 gal

That's some tank!

Ahh! You also did the volume wrong. You need to measure everything in either feet or inches, and you mixed them together.

Let's start over. The volume of the tank in in^3 is

21*15*11 = 3465 in^3 = 15 gals.

Now you should be able to make things come out right.

- Math- PLEASE HELP -
**Bri**, Sunday, March 17, 2013 at 7:24pm
Ok I corrected my mistake and got that it would cost $51.48, because it was 15 gallons she needed to get.

Is this correct now? Thank you

- Math- PLEASE HELP -
**Steve**, Monday, March 18, 2013 at 9:52am
Looks good to me.

## Answer This Question

## Related Questions

- Math - It took 6.5 gallons of gas to fill the tank of the family car. If the ...
- math - Ron's car has a 12-gallon gas tank. If gas costs $1.45 per a gallon, how ...
- Math - Beth's car has a gas tank that can hold 15 gallons of gas. Her car uses 1...
- Math - Daniel Filled the gas tank in his car with 14.6 gallons of gas. He then ...
- Math - The price of gas is 85.9 cents per Litre. If Brenda needs 48.3 L of gas ...
- Algebra - If your truck gets 22 high way miles per gallon and your traveling ...
- algebra 2 - mona lives in florida. she drives 550 miles to texas. her car's tank...
- algebra - while driving a car you realize that you only have one eighth gas ...
- Chemistry - Imagine that you have a 7.00 gas tank and a 3.00 gas tank. You need ...
- Chemistry - Imagine that you have a 7.00 gas tank and a 3.00 gas tank. You need ...

More Related Questions