Question 84 (i)

Campus and Welfare Committee of school is planning to develop a blue shade for painting the entire school building. For this purpose, various shades are tried by mixing containers of blue paint and white paint. In each of the following mixtures, decide which is a lighter shade of blue and also find the lightest blue shade among all of them.

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Solution

In mixture A,
The number of white containers= 4
$∴$ Ratio of blue and white $= \frac{3}{4} = 0.75$

In mixture B,
The number of blue containers = 3
The number of white containers = 3
$∴$ Ratio of blue and white $= \frac{3}{3} = 1$

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Question 84 (ii)

Question 84 (iii)

Campus and Welfare Committee of school is planning to develop a blue shade for painting the entire school building. For this purpose, various shades are tried by mixing containers of blue paint and white paint. In each of the following mixtures, decide which is a lighter shade of blue and also find the lightest blue shade among all of them.

If one container has one litre paint and the building requires 105 litres for painting how many containers of each type is required to paint the building by darkest blue shade?

10 litres of blue paint and 15 litres of white paint are mixed in one can; 12 litres of blue and 17 litres of white are mixed in another. Will the shades of blue in the two cans be the same? Why?

Q. A tin of paint of a particular shade of colour is a mixture of red, blue and yellow.

\frac{1}{4}

of the total volume of paint is made up of red paint and the ratio of the volume of red paint to that of blue paint is 3 : 2. Find the total volume of paint that will contain 84 mL of yellow paint.

Q. A certain shade of green paint is made from six parts yellow mixed with four parts blue. If seventy cans of paint wad used in all, how cans of blue were used?

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In mixture A, The number of white containers= 4 ∴ Ratio of blue and white =34=0.75 In mixture B, The number of blue containers = 3 The number of white containers = 3 ∴ Ratio of blue and white=33=1

In mixture A,
The number of white containers= 4
$∴$ Ratio of blue and white $= \frac{3}{4} = 0.75$

In mixture B,
The number of blue containers = 3
The number of white containers = 3
$∴$ Ratio of blue and white $= \frac{3}{3} = 1$