Register
in a classroom the probabilty that the teacher chooses a boy from a girl is 0.45. how many boys are there?
223k views
5 votes
in a classroom the probabilty that the teacher chooses a boy from a girl is 0.45. how many boys are there?

User M Rajoy
by
8.7k points

2 Answers

4 votes
P=favorable outcome/total outcome
P of choosing boy is given which 0.45
0.45=B/20
B=9 boys
User Icel
by
8.3k points
2 votes
0.45/1 becuase 1 is 100%
0.45/1=4.5/10=45/100=9/20

9/20 chance that chooses a boy
20 people
9/20 times 20=9
9 boys
User Kabeer Arora
by
8.1k points
← Prev Question Next Question →

Related questions

User Alani
asked Nov 4, 2024 154k views
What is the probabilty of picking a red ball from a basket of 24 different balls
Alani asked Nov 4, 2024
by Alani
7.9k points
2 answers
0 votes
154k views
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.5m questions

12.2m answers

Other Questions

How do you can you solve this problem 37 + y = 87; y =
How do you estimate of 4 5/8 X 1/3
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
A dealer sells a certain type of chair and a table for $40. He also sells the same sort of table and a desk for $83 or a chair and a desk for $77. Find the price of a chair, table, and of a desk.
Link Copied!