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The total area of the outside walls that has to be painted was calculated to be 55,84 m2.

a.    If one litre of paint is needed topaint one coat of paint on 3 m2 of the wall calculate how many litres of white paint are required to paint two coats of paint 
on the outside of the house.

b.    White paint is sold in 1 litre, 5 litre, 10 litre and 20 litre tins. The paint is advertised as follows:

What size tin of paint would be the cheapest option to buy to paint the outside 
of the house?
Show ALL your calculations for determining the answer.

in Grade 11 Maths Literacy by Silver Status (28,718 points) | 11 views

1 Answer

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a, 1 l - 3 m^2, 55.84m^2 needs more

= 55.84/3 x 1

= 18.61 x  coats = 37.23 liters are needed

b . if 1 litre tins are used 38 tins are needed = 38 x60 =R2280

     if 5 litre tins are used 8 tins are needed = 220 x 8 = R1760

     if 10 litre tins are used 4 tins are needed =4 x 400= R1600

    if 20 litre tins are used 2 tins are needed = 2 x 750 = R1500

20 litre tins are cheaper
by Wooden (3,696 points)

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