Question

A formula for ivy cream includes 3 g of hydrocortisone in a total of 60 g of ointment. If an order calls for 45 g of this ointment, how much hydrocortisone will be needed?

Answer 1

Step-by-step explanation:

This is just a proportion.

3 grams hydrocortisone x

====================== = ==============

60 grams of ointment 45 grams of ointment

3/60 = x / 45 Cross multiply

45 * 3 = 60 * x Combine the left.

135 = 60* x Divide by 60

135/60 = x

x = 2.25 grams of hydrocortisone.