The price is $26 before tip.
Step-by-step explanation:
Given,
Total bill including tip = $29.90
Let,
x be the amount before tip.
The bill before tip = 100%
Tip = 15%
Total bill = (100+15)% = 115%
Now,
115% of x = 29.90
[tex]\frac{115}{100}x=29.90\\1.15x=29.90[/tex]
Dividing both sides by 1.15
[tex]\frac{1.15x}{1.15}=\frac{29.90}{1.15}\\x=26[/tex]
The price is $26 before tip.
Keywords: division, percentage
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