Before 350 companies are awarded ISO 9002, few officers are assigned to check all the items manufactured by the companies. After the inspection, the officers prepared a report as follows: 8. x...

Extracted text: Before 350 companies are awarded ISO 9002, few officers are assigned to check all the items manufactured by the companies. After the inspection, the officers prepared a report as follows: 8. x companies had non-defective(N) items only, y companies had partially defective(P) items only, 26 companies had defective (D) items only, 60 companies had non-defective and partially defective items 45 companies had non-defective and defective items 75 companies had defective and partially defective items 15 companies had non-partially and defective items Represent the above information in a Venn diagram. (i) If the number of company that had non-defective items is more by 10 than those companies that had partially defective items, derive a pair of simultaneous equations in x and y. (ii) Solve the equations in (i). (iii) Find the number of companies that had non-defective or defective items.