Answer:
The food contains 450 mg of Calcium.
Step-by-step explanation:
This question can be solved using a rule of three.
The person requires 1500 mg of Calcium. The food contains 30%. So
[tex]\frac{30}{100}\ast1500=30\ast\frac{1500}{100}=30\ast15=450[/tex]The food contains 450 mg of Calcium.
