@Michele_Laino

A box holds 42 pieces of red construction paper and 18 pieces of blue construction paper. A piece of paper is pulled out of the box at random and then placed back in the box.

How many times can you expect that a piece of red paper will be pulled out of the box in 110 tries?

A.
48

B.
55

C.
60

D.
77

Question

@Michele_Laino

A box holds 42 pieces of red construction paper and 18 pieces of blue construction paper. A piece of paper is pulled out of the box at random and then placed back in the box.
 
How many times can you expect that a piece of red paper will be pulled out of the box in 110 tries?
 
 
 A.
48
 
 B.
55
 
 C.
60
 
 D.
77

anonymous · Answer

I got D

michele_laino · Answer

hint:
what is the probability to get a red paper?

anonymous · Answer

77?

anonymous · Answer

42/(42+18)=7/10
 7/10*110=77 red papers