Question

select the correct answer.
graham puts $20 in his piggy bank every week. at the end of 39 weeks, he adds $100 to the piggy bank money and decides to do the following:

1. buy some clothes and sports gear for $314.23
2. buy his mom a present for $123
3. divide the rest of the money equally among his three brothers

use a calculator to find the amount of money each brother will get.

a. $147.59
b. $260.25
c. $293.13

Explanation:

Step1: Calculate total money in piggy bank after 39 weeks

Graham puts $20 every week for 39 weeks, so total from weekly savings is $20\times39$. Then he adds $100. So total money $M = 20\times39 + 100$.
$20\times39 = 780$, so $M = 780 + 100 = 880$.

Step2: Subtract expenses

First expense: $314.23$, second expense: $123$. So remaining money after expenses $R = 880 - 314.23 - 123$.
$880 - 314.23 = 565.77$; $565.77 - 123 = 442.77$.

Step3: Divide remaining money among 3 brothers

Divide remaining money $442.77$ by 3. So each brother gets $\frac{442.77}{3}$.
$\frac{442.77}{3} = 147.59$.

Answer:

A. $147.59$