Question

How would Alex change a recipe that serves 18 into one that serves 150?

Answer 1

You can use proportions to solve this, where:

• One batch of the recipe serves 18.
• x batches of the recipe serve 150.

So, it would be:

`(1)/(18) =(x)/(150) \\\\18x=150\\\\x=(150)/(18) =(25)/(3) =8(1)/(3)`

This means that Alex would need to make
`8(1)/(3)` batches (or 9 batches with some left over) of the recipe to serve 150 people.