Question

Sally takes 2 5/6 minutes to drive from her home to the local shopping center. She spends 1/5 of this time waiting at traffic lights. Find the number of minutes she spends waiting.

Answer 1

Answer:

$\dfrac{17}{30}$ minutes.

Step-by-step explanation:

It is given that Sally takes $2\dfrac{5}{6}$ minutes to drive from her home to the local shopping center.

$2\dfrac{5}{6}=\dfrac{2(6)+5}{6}$

$2\dfrac{5}{6}=\dfrac{12+5}{6}$

$2\dfrac{5}{6}=\dfrac{17}{6}$

She spends 1/5 of this time waiting at traffic lights.

Waiting time in traffic $=\dfrac{17}{6}\times \dfrac{1}{5}$

                       $=\dfrac{17}{30}$

Therefore, waiting time is $\dfrac{17}{30}$ minutes.