131k views
19 votes
A school committee consists of 4 girls and 6 boys. How many girls should be added to the committee so that the probability of choosing a student from the committee at random and choosing a girl is 70%?

User Padmalcom
by
4.2k points

1 Answer

8 votes
An important fact that would help you with this is knowing that
70% = 3/4


User Nglauber
by
4.1k points