If a drug has a concentration of 350 mg per 10 mL, how many milliliters are needed to deliver 2 grams of the drug? Express your answer rounded to the nearest milliliter.

Respuesta :

1 mg = 0.001 grams
so 350 mg = (350 * 0.001) = 0.35 grams

0.35 / 10 = 2/x....0.35 grams to 10 mL = 2 grams to x mL
cross multiply
0.35(x) = (10)(2)
0.35x = 20
x = 20/0.35
x = 57.142 rounds to 57 mL <===