Increased by 15
past score was x
increased by 15 means he raised to 15+x
it was raised to 83%
therefor
x+15=83
first option is right (and first test was 68%)
G = gallons d = days
10g = 3d
?g = 1d
1g = ?d
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for gallons in a day, divide 10g = 3d by 3
d = 10/3 gallons
3 and 1/3 gallons in a day
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for days per gallon, divide 10g = 3d by 10
g = 3/10 days
1 gallon lasts 3/10 of a day
<em>Hi</em><em> </em><em>your</em><em> </em><em>answer</em><em> </em><em>is</em><em> </em><em>4</em><em>.</em><em>.</em>
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Hopes this helps:
Answer:
A: 5d+5
