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The ratio of the sale price of a textbook to the original price is 1:3. The original price is $81. What is the sale price. Create a proportion to find out.

The ratio of the sale price of a textbook to the original price is 1:3. The original price is $81. What is the sale price. Create a proportion to find out.
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The ratio of the sale price of a textbook to the original price is 1:3. The original price is $81. What is the sale price. Create a proportion to find out.

User Shahar Gvirtz
by
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1 Answer

6 votes
x - sale price
y - original price


x:y=1:3 \\x:81=1:3 \\3x=81* 1 \\ \\x= (81)/(3) \\ \\x=27
User Jarel
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