Question

jo has a 10 gb monthly cell phone plan. jo has used 4 gb in the first 10 days of the month. at that rate, how many gb will jo use after a month of 30 days? $\frac{10}{30}=\frac{4}{x}$, $x = $ ex: 13 gb

Explanation:

Step1: Set up proportion

We know that in 10 days, 4 GB is used. Let $x$ be the amount of data used in 30 days. The proportion is $\frac{4}{10}=\frac{x}{30}$.

Step2: Cross - multiply

Cross - multiplying gives us $10x = 4\times30$.

Step3: Solve for $x$

$10x=120$, then $x=\frac{120}{10}=12$.

Answer:

12