Question

Mr. Johnson's lunch bill is $29.90, witch included a 15% tip. What is the price before the tip.

Answer 1

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

$\frac{115}{100}x=29.90\\1.15x=29.90$

Dividing both sides by 1.15

$\frac{1.15x}{1.15}=\frac{29.90}{1.15}\\x=26$

The price is $26 before tip.

Keywords: division, percentage

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