Question

Calculate the dosage in milligrams per kilogram body weight for a 130 lb adult who takes two aspirin tablets containing 0.324 g of aspirin each.

Answer 1

1 pound = 0.45 kg

so 130 pound = 130 * 0.45 = 58.50 kg

now,

1 g = 1000 mg

so, 0.324 g = 1000 * 0.324 = 324 mg

As the person is taking 2 tablets with 324 mg each, so 2 tablets have

2 * 324 mg = 648 mg

So a 58.50 kg person is taking 648 mg of aspirin.

So per kilogram body weight we get ,

$\frac{648}{58.50}$ = 11.076 mg

Hence per kilogram dosage will be 11.076 mg