8640 ÷12 = 720,8640 ÷18 = 480. Factory A produces 720 tops and 480 pairs of sweatpants every day.

6720 ÷16 = 420, 6720 ÷14 = 480. B factory produces 420 tops and 480 pairs of sweatpants every day.

It is known that Factory B will fully produce sweatpants, 480×30= 14400 pieces.

14400 ÷ 720 = 20,8640 ÷ 30× (30-20) = 2880. Factory A produces14400 blouses and 2880 complete sets of clothes.

14400+2880= 17280, * * generate 17280 sets, and select C.

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Question 3 1,

There are x male employees,

90%( 160-x)+70% x = 160×85%，

X = 40,40 male employees. Choose a.

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Question 3 1,

(14550+100× 300) ÷ (100+50) = 297, and there are 297 genuine products.

(50× 300-14550) ÷ (100+50) = 3, and there are 3 defective products. Option d