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I don’t understand this, can somebody help?

I don’t understand this, can somebody help?-example-1

1 Answer

4 votes

29)


quarters = 13 \\ dimes = 25 \\ nickles = 18 \\ pennies = 30 \\ total \: coins = 86


not \: penny \: or \: dime = quarter \: or \: nickle


p(x) = (13 + 18)/(86) = (31)/(86) = 0.36

30)


gallons \: for \: car \: 1 = (450)/(18) = 25 \: gal


gallons \: for \: car \: 2 = (450)/(25) = 18 \: gal


we \: need \: 25 + 18 = 43 \: gallons


43 * 2.49 = 107.07 \: dollars

User Mark Stosberg
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