Chapter 0.2, Problem 7E

To determine

To calculate: How much is her allowance.

Answer to Problem 7E

$ 8 is her allowance.

Explanation of Solution

Suppose the Tia has total allowance is $ $x$ .

Given information: She used half of the allowance to buy a ticket,

Now, she had left allowance $=x-\frac{x}{2}=\frac{x}{2}$

Aging she spent $ 1.75 of the left of the allowance for buy ice cream.

Now, she had left allowance $=\frac{x}{2}-\$1.75=\$2.25$

Calculation:

  $\begin{array}{l}\Rightarrow \frac{x}{2}=2.25+1.75\\ \Rightarrow \frac{x}{2}=4\\ \Rightarrow x=8\end{array}$