The Cost Of A Protein Bar Increased From $2.50 To $2.80. The Percent Increase In The $2.80 Rate Was How Much?
Answer:
A percent increase is customarily measured against the value before the increase ($2.50). Here, the increase is
($2.80-$2.50)/$2.50*100% = 30/250*100% = 12%
The cost increased 12%.
If you want to use $2.80 as the base of the percentage, after you can say
($2.50 - $2.80)/$2.80*100% = -30/280*100% ≈ -10.714%
The previous cost was 10.7% below the current cost.
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