5. 1 The bakery received some bagged flour from the flour mill, 60% from 1 flour mill and 40% from the second flour mill.

Every 1 00 bag of flour produced by 1 flour mill includes 60 bags of high-grade flour, 30 bags of1grade flour and 10 bag of secondary flour.

There are 50 bags of high-grade flour, 20 bags of 1 grade flour and 30 bags of second-grade flour in every 100 bag of flour produced by No.2 Flour Factory.

What is the probability of randomly selecting high-grade flour from the bakery warehouse?

5.2 Ask questions in the case of 5. 1

What is the probability that the bakery warehouse randomly picks 1 flour?

5.3

What is the probability that the bakery warehouse randomly picks up grade 2 flour?

Suppose there are 100 bags of flour in the warehouse, 60 bags in 1 flour mill and 40 bags in No.2 flour mill.

According to the given conditions, 60 bags of flour from 1 flour mill contain

60*60% high-grade flour =36 bags.

1 60 * 30% of grade flour =18 bags.

60* 10% secondary flour =6 bags.

There are 40 bags of flour in the second flour mill.

40*50% high-grade flour =20 bags.

40*20% 1 flour =8 bags.

40*30% secondary flour = 12 bags.

So 100 bag contains 36+20=56 bags of high-grade flour (56%).

1 grade flour 18+8=26 bags (26%)

Secondary flour 6+ 12= 18 bags (18%)