SOLUTION: I am a parent trying to help my son, and I can get the answer, but I don't know how to write it for him, or show him the work. The question is: A tv ad claims that 4L of paint wil
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Question 665374: I am a parent trying to help my son, and I can get the answer, but I don't know how to write it for him, or show him the work. The question is: A tv ad claims that 4L of paint will cover 40m2. How much paint is needed to cover 70M2? I believe the answer is 7L, but I don't know how to show thw work, or write it down.
Found 3 solutions by Alan3354, MathTherapy, bloggauta:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
A tv ad claims that 4L of paint will cover 40m2. How much paint is needed to cover 70M2?
------------
Area = 40 sq m/4 L = 10 sq m/Liter
-----
70/10 = 7 liters
===============
Or,
4/40 = P/70
cross multiply
40P = 280
P = 7 liters
Answer by MathTherapy(10552) (Show Source): You can put this solution on YOUR website!
I am a parent trying to help my son, and I can get the answer, but I don't know how to write it for him, or show him the work. The question is: A tv ad claims that 4L of paint will cover 40m2. How much paint is needed to cover 70M2? I believe the answer is 7L, but I don't know how to show thw work, or write it down.
You can use proportions as it can be said that since 4 represents 40, then what amount of paint, or L, can cover . This can be written as:
40L = 4 * 70 ------ Cross-multiplying
40L = 280
L, or amount of paint, in liters, that can cover of space = , or
Send comments and “thank-yous” to “D” at MathMadEzy@aol.com
Answer by bloggauta(8) (Show Source): You can put this solution on YOUR website!
4L/40m^2 = 1L/10m^2 then (1L/10m^2)*(70m^2)=7L
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