Question

1. A boy contains 324 balls of red and
green
colour. The ratio of the balls is 12:15.
If 10 more red balls are added, find the
percentage of red balls before, and after
adding 10 more red balls.​

Answer 1

Step-by-step explanation:

Probability of an event P(E)=

TotalNo.ofOutcomes

No.ofFavourableOutcomes

Here,

Favourable Outcomes = Getting a Red ball

Number of Favourable Outcomes = Number of Red Balls =4

Total Number of Outcomes =6 = Total Number of Balls

⇒P(E)=

6

4

=

3

2