Question

Eli is making guacamole. He uses 2 tablespoons of cilantro for every 3 avocados. At this rate, how many tablespoons of cilantro will he need for 9 avocados?

Answer 1

6

Explanation:

Write and solve an equation of proportions:

cilantro avocados

2 3

x 9

The appropriate equation is thus:

2 3

------ = ------

x 9

After cross-multiplication, we have 3x = 18, or x = 6.

Need 6 tablespoons of cilantro for 9 avocados.

Answer 2

He will need 6 tablespoons of cilantro

Explanation:

2:3 is your current ratio and since you can multiply the avocados by 3 to get 9

you have x:9 and you do 2 times 3 to get that answer.