Question

1. combined, natalie and ellie sold 90 boxes of girl scout cookies. if natalie sold one - third of this, find the ratio of the boxes of cookies that natalie sold to the number of boxes that ellie sold.

Explanation:

Step1: Find boxes Natalie sold

Total boxes = 90. Natalie sold $\frac{1}{3}$ of 90.
$90\times\frac{1}{3} = 30$

Step2: Find boxes Ellie sold

Ellie's boxes = Total - Natalie's
$90 - 30 = 60$

Step3: Find the ratio

Ratio of Natalie's to Ellie's: $\frac{30}{60} = \frac{1}{2}$

Answer:

The ratio is $\boldsymbol{\frac{1}{2}}$ (or 1:2).