John uses 4 cups of chocolate chips for every 7 cups of cookie batter. How many chocolate chips does he need if he founds out he would need 105 cups of cookie batter?

Answer 1

To find the number of cups of chocolate chips, we set up a proportion:

4 cups of chocolate chips / 7 cups of cookie batter = x cups of chocolate chips / 105 cups of cookie batter

Cross multiplying, we get:

4 * 105 = 7 * x

420 = 7x

Dividing both sides by 7, we get:

x = 60

Therefore, John needs 60 cups of chocolate chips.