Dana spent 3 hours babysitting for a neighbor she and the children played games for 1 3/4hour and watched tv for 1/2 hour the rest of the time Dana red stories how much time did Dana spend reading stories

Dana read stories for 3/4 hours, or 40 minutes

Step-by-step explanation:

Before answering, its important to remember that 2/4 is equivalent to 1/2.

All you have to do is add 1/2 to 1 3/4. But for our sake lets convert 1/2 to 2/4. This leaves us with the following problem:

1 3/4 + 2/4  or  1  (3 + 2)/4 = 1 5/4

This resulting numerator is over the amount of our denominator, so we'll count that as one, resulting in the now simplified:

2 1/4

Now that we've calculated how long the children played and watched tv, simply subtract that from the 3 hours Dana spent babysitting.

3 - 2 1/4 = 3/4 hours

I'm not sure what unit they want the answer in, but I've included the solution in hours and converted to minutes as well.

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%