Q$\mathrm{.}3.($a$)$ Calculate the capacity requirements per week for a company which uses an MRP system.

Actual capacity requirements and forecasted demand are given in the tables below. Company

plans to adjust capacity when the cumulative deviation exceeds $\frac{1}{4}$ of the forecasted average

demand per week.

$($b$).$ An automobile component manufacturer has the plan of buying a moulding machine which can

manufacture $170000$ effective parts per year. The moulding machine is a part of a product line.

The system efficiency of the product line is $85\%.$

What is the required systems capacity?

Assume that it takes $100$ seconds to mould each part and the plant operates $2000$ hours per

year. If the moulding machines are used only $60\%$ of the time and are $90\%$ efficient. What is

the actual output of the moulding machines per hour?

How many moulding machines would be required $?$