Drinking 8 fluid ounces of milk provides 270.0 milligrams of calcium. How many fluid ounces of milk provide 72.5 milligrams of c
alcium? Round to the nearest tenth.
2 answers:
Heya !
Check the attachment.
Hope it helps you :)
Set up a proportion:

The numerator represents fluid ounces of milk, and the denominator represents milligrams of calcium.
Simplify the first fraction to make multiplication easier:


Cross multiply the fractions:


Divide both sides by 135 to get x by itself:

2.1 fluid ounces of milk provide 72.5 milligrams of calcium.
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