exam Maths Puzzle Numerical Ability

What is the ratio of five days to two weeks (in days)?

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exam Other Question

A grapefruit beverage that is 45% concentrated juice is mixed with an orange beverage that is 75% concentrated juice to produce a blend that is 55% concentrated juice. How many gallons of each must be mixed to produce 200 gallons of the blend? Solve each of the following systems by substitution.
McGraw Hill 6th edition, 8.3 # 28.
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4x-12y=5
-x+3y=-1