Umm can you be more specific on your question so I can help you need to explain what you need help on
Answer:
175 ways
Step-by-step explanation:
5 balls are red, and 7 balls are blue making a total of 12 balls.
4 balls are drawn from the box,
1 ball is red and 3 balls are blue out of the 4 drawn from the box.
We have to choose 1 ball from 5 red balls and 3 blue balls from 7 blue balls.
Since the order is not essential we use combinations to find out
5C1 * 7C3= 5*35 = 175 ways
The distributive property is 15+45 = (10 + 40) + (5+5) = 50 + 10 = 60
Hope this helps you.