### Home > MC2 > Chapter 1 > Lesson 1.2.2 > Problem1-58

1-58.

If the coin landed on tails 47 times out of a total of 80 times, how many times did the coin land on heads?

See part (a).

Read the situation carefully. How many green marbles are in the bag?

The probability is 0 because there are no green marbles in the bag.

The probability of not pulling a heart out of the deck can also be considered as the probability of pulling a card that is not a heart.

If she pulled hearts 40% of the time out of 30 attempts, how many hearts did she draw?

$\frac{4}{10}\cdot 30= ?$

Based on this number and the total number of cards, find the number of non-hearts that she drew and find its probability.

$60\% \text{ or }\frac{18}{30}$

To help visualize the bag, check out the etool!
Click the link at right for the full version of the eTool: MC2 1-58 HW eTool