to get shade of blue a painter mixes blue paint and white paint in the ratio 4:1 so how many litres of blue paint and white paint would be needed to get 60 litres of the required shade of blue

4/1 = 60/x.

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To find out how many liters of blue paint and white paint are needed to get 60 liters of the required shade of blue, we can set up a proportion using the given ratio.

The ratio of blue paint to white paint is 4:1. This means that for every 4 liters of blue paint, we need 1 liter of white paint.

Let's assume 'x' is the amount of blue paint needed. Then the amount of white paint needed would be (1/4) * 'x'.

According to the problem, the total amount of required shade of blue is 60 liters, so we can set up the equation:

x + (1/4) * x = 60

To solve this equation, we can simplify it:

(5/4) * x = 60

Next, we isolate 'x' by multiplying both sides of the equation by (4/5):

x = (60 * 4) / 5

x = 48 liters

Therefore, 48 liters of blue paint and (1/4) * 48 = 12 liters of white paint would be needed to get 60 liters of the required shade of blue.