Mr. Lee can paint 20 chairs in t hours. He uses 3 liters of paint for every 12 chairs that he painted.

A.) Find in terms of t, the number of chairs that he can paint in 3 hours

B.) Find, in terms of t, the time take by Mr. Lee to paint seven chairs

C.) If t= 4, find the amount of paint Mr. Lee has used after painting for 4 hours.

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Verified Answer :

Brianoki Brianoki · Answer 1 · 2016-12-20T21:16:52-05:00

Abecause 20 chairs in 3 hours is 60 chairs total. Then all you do is have to get 5*3 to get how many liters he used for all 60 chairs

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slicergiza slicergiza · Answer 2 · 2019-10-05T03:45:21-04:00

Answer:

A) \(\frac{60}{t}\)

B) \(\frac{140}{t}\)

C) 5 liters.

Step-by-step explanation:

Given,

The number of chairs painted in t hours = 20,

So, the number of chairs will be painted in 1 hour = \(\frac{20}{t}\),

A)

The number of chairs will be painted in 3 hours = 3 × chairs painted in 1 hour

\(=3\times \frac{20}{t}\)

\(=\frac{60}{t}\),

B) The number of chairs will be painted in 7 hours = 7 × chairs painted in 1 hour

\(=7\times \frac{20}{t}\)

\(=\frac{140}{t}\),

C) If t = 4 hours,

The number of chairs painted in 1 hour = \(\frac{20}{4}\) = 5,

So, the number of chairs will be painted in 4 hours = 4 × chairs painted in 1 hour

= 20,

Now, paint required for 12 chairs = 3 liters,

So, the paint required for 1 chair = \(\frac{3}{12}\) = \(\frac{1}{4}\) liters,

Hence, the paint required for 20 chairs = 20 × paint required for 1 chair

\(=20\times \frac{1}{4}\)

= 5 liters.