Bar graph shows the number of fans produced (in hundreds) by a manufacturer in the period of four months i.e. from January to April. Shopkeeper has to...
Question
Bar graph shows the number of fans produced (in hundreds) by a manufacturer in
the period of four months i.e. from January to April.
Shopkeeper has to decide whether to test or not all the units of fans before sending them to the customer.
If he has decided to test he has two options.
(a) Option I
(b) Option II
Option I:- It cost Rs 2.50 per unit as testing cost but this method of testing allows 30% of defective fans
to pass to the customer.
Option II:- It cost Rs 4 per unit as testing cost and it find 90% of defective units
→ All defective units identified at the customer end, will causes a penalty of Rs 60 per units. Which are to
be paid by shopkeeper. Defective units found during testing are repaired at Rs 20 per unit.
In May, shopkeeper uses option II for testing the whole units of fans produced and he has to pay
penalties of Rs 1620 to the customer. Then, find the total units of fans manufactured in that month if total
defective units are 25 5
7
% in that month.