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Question

# If blue and yellow paints are mixed in the ratio 7:5 to make a new colour, blue paint is used 10 litres more than yellow paint then find how many litres of blue and yellow paint is used.

A

blue paint = 25 litres

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B

blue paint = 35 litres

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C

yellow paint = 25 litres

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D

yellow paint = 20 litres

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Solution

## The correct options are B blue paint = 35 litres C yellow paint = 25 litres Given the ratio in which blue and yellow paint are mixed = 7:5 ∴ Let the volume of blue paint used = 7x and volume of yellow paint used = 5x Given 10 litres of blue paint is used more than yellow paint ∴ 7x - 5x = 10 ⇒ 2x = 10 ⇒ x = 5 ∴ volume of blue paint used = 7x = 7× 5 = 35 litres and volume of yellow paint used = 5x = 5× 5 = 25 litres

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