Calcium and citality

The daily dose of calcium obtained using 0.75 liters of milk and 60 grams of cheese.

A/ At the morning I drank half a liter of milk. How much cheese I must eatto eat a daily dose of calcium?

b / I ate 50 grams of cheese, how much milk I must drink?

c / How many times I overshoot daily dose, when I drank one liter of milk and ate 100 grams of cheese?

Correct result:

a =  20 g
b =  0.125 l
c =  2

Solution:

$a=60\cdot (1-0.5\mathrm{/}0.75)=20\text{ g}$

$b=0.75\cdot (1-50\mathrm{/}60)={\displaystyle \frac{1}{8}}\text{ l}=0.125\text{ l}$

$c=1\mathrm{/}0.75+100\mathrm{/}60-1=2$

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