### Home > INT2 > Chapter 7 > Lesson 7.1.5 > Problem7-63

7-63.

Earl (from problem 7-30) still hates to wash the dishes and take out the garbage. He finds his own weighted coin, one that will randomly land on heads $30\%$ of the time. He will flip a coin once for each chore and will perform the chore if the coin lands on heads.

1. What is the probability that Earl will get out of doing both chores?

There are two chores and he has a $70\%$ chance of getting out of each. Start by making an area model or tree diagram.

$(0.7)(0.7) = 0.49$

1. What is the probability that Earl will have to take out the garbage but will not need to wash the dishes?

If there is a $30\%$ chance he will land on heads for one chore, what are the chances he will land on tails for the other chore?