Question

Roby sells $178$ dishes per day. His restaurant remains closed on every Friday and Monday. Estimate the number of dishes he sells in $2$ weeks. (Round off to the nearest $10$.)

• A. $\text{1600 dishes}$
• B. $\text{1800 dishes}$
• C. $\text{1700 dishes}$
• D. $\text{1400 dishes}$

Answer 1

The correct option is B $\text{1800 dishes}$

Let’s round off the number of dishes sold per day.

The number of dishes sold per day is $178$.

$178$ lies between the tens $170$ and $180$. Since $178$ is closer to $180,178$ can be rounded off as $180$.

The restaurant remains closed on Friday and Monday, which means it is open for $5$ days in a week.

So the number of dishes sold in a week $=5\times 180=900$

Hence, the number of dishes sold in two weeks $=2\times 900=1800$