Question

The circle graph above shows how Davids monthly expenses are divided. If David spends $\$450$ per month for food, how much does he spend per month on his car?

• A. $\$20$
• B. $\$320$
• C. $\$360$
• D. $\$400$
• E. $\$450$

Answer 1

The correct option is C $\$360$

Let ${}^{\prime }{x}^{\prime }$ be the total monthly expenses of David.

From the circle graph,

Expenses spent on food per month $=$ $25\%$ (Total monthly expenses)

$=$ $\frac{25}{100}$ $\times$ $x$

Given, expenses spent on food per month $=$ 450$

From above,

$\frac{25}{100}$ $\times$ $x$ $=$ 450$

$x$ $=$ $4$ $\times$ 450$

$x$ $=$ 1800$

Expenses spent on his car per month $=$ $20\%$ (Total monthly expenses)

$=$ $\frac{20}{100}$ $\times$ $x$

$=$ $\frac{20}{100}$ $\times$ 1800$

$=$ 360$

Therefore, expenses David spend per month on car is ${}^{\prime }$360$$'$.