Question

A recipe that serves 2 people calls for 1,600 milligrams of baking soda. You want to make enough for 10 people. How many grams of baking soda will you need?

Answer 1

1)
we calculate the number of miligrams that I need for 10 people.

2 people--------------------------1600 mg
10 people------------------------    x
x=(10 people * 1600 mg) / 2 people=8000 mg.

2)
we express this amount (8000 mg) in grams.

1 gram----------1000 milligrams.
x-------------------8000 milligrams

x=(1 gram * 8000 miligrams) / 1000 milligrams=8 grams


answer: 8 grams.