Respuesta :

[tex] \dfrac{3}{4} \text { of the room = } 1\dfrac{1}{2} \text { gallons of paint }[/tex]

[tex] 1 \text { room = } 1\dfrac{1}{2} \div \dfrac{3}{4} \text { gallons of paint }[/tex]

[tex] 1 \text { room = } \dfrac{3}{2} \times \dfrac{4}{3} \text { gallons of paint }[/tex]

[tex] 1 \text { room = } 2 \text { gallons of paint }[/tex]

Painter will using 2 gallons of paint to the whole room.

What is Ratio?

Ratio is defined as a relationship between two quantities, it is expressed one divided by the other.

What is percentage?

The percentage is defined as the ratio expressed as a fraction of 100.

The percentage is denoted by sign of %.

For example, if XYZ scored 46% marks in his examination, it means that he scored 46 marks out of 100. It is written as 46/100 in the fraction form and 46:100 in terms of ratio.

A painter used 1 1/2 gallons of paint to paint 3/4 of a room

Fractions convert to decimals :

A painter used 1.5 gallons of paint to paint 0.75 of a room

Let the number of gallons of paint = P

And the number of the painted room = R

The ratio of gallons of paint to the painted room = P : R  

The ratio of gallons of paint to the painted room =   1.5 / 0.75

The ratio of gallons of paint to the painted room =   2 : 1

Hence, painter will using 2 gallons of paint to the whole room.

Learn more about Ratio here:

brainly.com/question/1504221

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