Given that the efficiency of chalk production is 82 %
We can calculate the efficiency of chalk production using the formula,
% Efficiency
![=(Actual yield (g))/(Theoretical yield (g)) *100](https://img.qammunity.org/2019/formulas/chemistry/high-school/u89ulcancnvy57xixj5i8dpdebhzvgeeoj.png)
Calculating actual yield from % efficiency an theoretical yield:
82 %
![=(Actual yield)/(400,000 g) * 100](https://img.qammunity.org/2019/formulas/chemistry/high-school/hxvr8y0zgok95yx69qjtrqurek3khcs2r7.png)
Actual yield =
![(82 *400000 g)/(100) = 32,800 g](https://img.qammunity.org/2019/formulas/chemistry/high-school/9woozi7zc3mxvgni0eaqnpshnvyvkahh5l.png)
Each chalk box has 145 g chalk
Number of boxes =
![32800 g *(1 box)/(145 g) = 2262 boxes](https://img.qammunity.org/2019/formulas/chemistry/high-school/ld7bzcqfzi6ubs1oyxbtwzznxrz1jfvmu2.png)
The goal of the chalk box company is to prepare 3000 boxes of chalk. So, the company will not be able to reach the goal as it can just prepare 2262 boxes when the efficiency is 82 %