exam Maths Puzzle Numerical Ability

one canned juice drink 30% orange juice, another is 10% orange juice. How many liters of each should be mixed togethr in order to get 20L that is 19% orange juice.

How many liters of the 10% orange juice should be in the mixture?

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exam Other Question

Working together Linda and Jim can clean the windows of their house in 3 hours and 36 minutes. Linda can clean all the windows by herself in 7 hours. How long will it take Jim to clean the windows by himself? You are dealt two cards successively without replacement from a standard deck of 52 playing cards. Find the probability that the first card is a two and the second card is a ten. Round your answer to three decimal places.