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Josie had 1 gallon of ice cream. She used #3/10# gallon to make a chocolate milkshake and #3/10# gallon to make a vanilla milkshake. How much ice cream is left?

Answer 1

Emery Allen

#2/5# gallon.

#3/10# gallon - chocolate shake

#3/10# gallon - vanilla shake

#3/10 + 3/10 = 6/10#

Now

#"1 gallon" \ - 6/10 \ "gallon"#

#= 10/10 \ "gallon" - 6/10 \ "gallon" = 4/10 \ "gallon"#

Simplified: #2/5# gallon

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Answer 2

Levi Adams

To find out how much ice cream Josie has left, you subtract the amount she used to make the chocolate and vanilla milkshakes from the original amount.

Original amount of ice cream = 1 gallon

Amount used for chocolate milkshake = 3/10 gallon

Amount used for vanilla milkshake = 3/10 gallon

Total amount used = ( \frac{3}{10} + \frac{3}{10} = \frac{6}{10} = \frac{3}{5} ) gallon

Ice cream left = Original amount - Total amount used

Ice cream left = ( 1 - \frac{3}{5} = \frac{5}{5} - \frac{3}{5} = \frac{2}{5} ) gallon

So, Josie has ( \frac{2}{5} ) gallon of ice cream left.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.