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Q1. (a) A manufacturer makes three types of paperclips, A, B and C. Each paperclip of type B weighs 20% more than type A and each of type C weighs 0.12 g more than type B.

The total mass of 12000 of type A, 8000 of type B and 5000 of type C is 11.64 kg.

Determine the mass of EACH of the three types of paperclip. (8)

(b) Salesman A is paid a basic salary of £32000. He receives 25% commission on all sales above £50000. Salesman B, in another firm, is paid a basic salary of £35000 with 20% commission on all sales above £40000. In a particular year both make sales of £150000.

Calculate the salaries for both A and B for that year. (8)