exam Maths Puzzle Numerical Ability

How many liters of a solution containing 22% sugar and how many liters of another solution containing 31% sugar must be mixed together to make 680 liters of solution containing 27% sugar?

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exam Other Question
Find the equation of the line that passes through (5,-3) and is parallel to the line 3x + 4y = 8 Find the length of AB if AC has lenghth 5 1/3 and BC has length 2 1/4.