Calcium and citality

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

a/ In the morning, I drank half a liter of milk. How much cheese must I eat to consume a daily dose of calcium?

b/ I ate 50 grams of cheese. How much milk must I drink?

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

Correct answer:

a =  20 g
b =  0.125 l
c =  2

Step-by-step explanation:

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

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

$c=1/0.75+100/60-1=2$

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