exam Maths Puzzle Numerical Ability

a researcher orders a broth 40.2% glucose for her lab. However, she needs a stronger broth, one that is 50.1% glucose. She has 16.1 liters of 57% glucose broth in the stock room. How much 50.1% glucose broth can she make?

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exam Other Question
Use the discriminant to determine whether the given polynomial is factorable into factors with integer coefficients. If so factor it.

21x^2 + 40 + 16 = 0 It says to write a problem that the equation could represent. Here is the problem.

one fourthx=7