Please help with these 2 questions!!
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Please help with these 2 questions!!

[From: ] [author: ] [Date: 12-09-28] [Hit: ]
but he does tell you that it is 2015 km to Mexico City, theres 11 cents to the peso, and gas costs 5.8 pesos per liter in Mexico. You know your car gets 21 miles to the gallon, but we still dont have a clue as to how much the trip is going to cost (in dollars) each person in gas ($/person).......
1: At the pizza party you and two friends decide to go to Mexico City from El Paso, TX where y'all live. You volunteer your car if everyone chips in for gas. Someone asks how much the gas will cost per person on around trip. Your first step is to call your smarter brother to see if he'll figure it out for you. Naturally he's too busy to bother, but he does tell you that it is 2015 km to Mexico City, there's 11 cents to the peso, and gas costs 5.8 pesos per liter in Mexico. You know your car gets 21 miles to the gallon, but we still don't have a clue as to how much the trip is going to cost (in dollars) each person in gas ($/person).
2: You're throwing a pizza party for 15 and figure each person might eat 4 slices. How much is the pizza going to cost you. You call up the pizza place and learn that each pizza will cost you $14.78 and will be cut into 12 slices. You tell them you'll call them back.Solve.

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this is just a conversion problem

first it it is round trip or to mexico city and back and your brother said it was 2015 km. so distance is 2 x 2015 km = 4030 km.

now let's convert to miles. 1km = .62miles so

1km/.62 miles = 4030 km/ x miles

.62 x 4030 = 2498.6 miles round trip

we need to know how many gals will be used and your car gets 21 miles the gal so

2498.6 miles / 21 miles/gal = 119 gals

we need liters and 3.785 liters = 1 gal so

3.785 liters/gal = x liters/119 gals so 3.785 x 119 = 450.4 liters needed of gas

cost in pesos = 5.8(450.4) = 2612.41 pesos but we want dollars an $ .11 = 1 peso so

$ .11/peso = $ x/2612.41 pesos = $287.36

total cost/3 = 287.36/3 = $ 95.79/person or close to it with rounding errors

need to know how many total slices so 4 x 15 = 60 total slices

need to know how many pizzas so 60 total slices/12 = 5 pizzas

5 pizzas x $14.78 =$ 73.90

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Do your own darn homework!

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11 cents to the peso means than gas costs 11 * 5.8 or 63.8 cents per liter.

3.78 * 0.638 = $2.41 per gallon of gas.

1 km = 0.625 miles, so that means it's 2015 * 0.625 = 1259.375 miles

Divide that by 21 and you get the number of gallons required, which is about 60.

60 * $2.41 = $144.60 total (and then just divide that up by the number of people)

2) 15 * 4 = 60 slices

60 slices / 12 slices per pie = 5 pies

$14.78 * 5 = $79.90

I hope this information was very helpful.
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