Drinking 8 fluid ounces of milk provides 270.0 milligrams of calcium. How many fluid ounces of milk provide 72.5 milligrams of calcium? Round to the nearest tenth.
8/270 = x/72.5
Cross multiply and solve for x.
To find the number of fluid ounces of milk that provide 72.5 milligrams of calcium, we can set up a proportion using the given information.
Let's call x the number of fluid ounces of milk.
We know that drinking 8 fluid ounces of milk provides 270.0 milligrams of calcium. So we have the proportion:
8 fluid ounces / 270.0 milligrams = x fluid ounces / 72.5 milligrams
To solve for x, we can cross-multiply and then divide:
(8 fluid ounces) * (72.5 milligrams) = (270.0 milligrams) * (x fluid ounces)
580.0 fluid ounces * milligrams = 270.0 milligrams * x fluid ounces
Dividing both sides by 270.0 milligrams, we get:
(580.0 fluid ounces * milligrams) / 270.0 milligrams = x fluid ounces
Simplifying, we have:
2.1481 fluid ounces = x fluid ounces
Rounding to the nearest tenth, we find that approximately 2.1 fluid ounces of milk would provide 72.5 milligrams of calcium.