Question

Every 1 3/4 teaspoon of a multiple vitamin, in granular form, contains 0.85 the minimum daily requirement of vitamin A. How many teaspoons of this vitamin are required to supply 2.25 the minimum daily requirement?

Answer 1

about 4.63 teaspoons

Explanation:

You can write the proportion ...

(teaspoons)/(fraction of RDA) = 1.75/0.85 = x/2.25

where x represents the unknown number of teaspoons. Multiplying by 2.25 gives you ...

x = 2.25(1.75/0.85) = 4.632...

About 4.63 teaspoons of vitamin will supply 2.25 times the RDA.

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That's between 4 5/8 and 4 2/3 teaspoons, roughly 22.8 mL.