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Let’s check out your problem:
Kylie needed
5
5
5
gallons of gas last week. This week, Kylie ended up needing
20
%
20\%
20%
less. How much gas is that?
\newline
_
_
_
_
\_\_\_\_
____
gallons
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Math Problems
Grade 8
Percent of change: word problems
Full solution
Q.
Kylie needed
5
5
5
gallons of gas last week. This week, Kylie ended up needing
20
%
20\%
20%
less. How much gas is that?
\newline
_
_
_
_
\_\_\_\_
____
gallons
Calculate Gas Reduction:
Calculate the amount of gas reduced due to the
20
%
20\%
20%
decrease.
20
%
20\%
20%
of
5
5
5
gallons =
0.20
×
5
=
1
0.20 \times 5 = 1
0.20
×
5
=
1
gallon
Subtract Reduced Amount:
Subtract the reduced amount from last week's total to find this week's requirement.
5
gallons
−
1
gallon
=
4
gallons
5 \text{ gallons} - 1 \text{ gallon} = 4 \text{ gallons}
5
gallons
−
1
gallon
=
4
gallons
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