Question

Eva can bake a pizza in $30$ minutes. How many pizzas can she bake in 4 hours?

• A. $4$
• B. $2$
• C. $12$
• D. $8$

Answer 1

The correct option is D $8$

$1h=60min$
$\Rightarrow 4h=240min$
Let’s assume Eva can bake p number of pizzas in $4h.$
Eva bakes $1$ pizza in $30min\Rightarrow 1:30$
As the number of pizzas and the time taken to bake them are in proportion, we write $1:30::p:240$
$\Rightarrow \frac{1}{30}=\frac{p}{240}$
By cross-multiplication, we get,
$30p=240$
$\Rightarrow p=\frac{240}{30}=8$
Therefore, Eva can bake $8$ pizzas in $4h.$