What is The conditional probability that a student studied for the test GIVEN that they failed?

1/27

Step-by-step explanation:

I'm sorry if this is incorrect but I came to this answer because since this so conditional you have to multiply to the two probabilities together. 12/27 studied for the test altogether but only 1/12 failed the test. So, when you multiply these two together and simplify them you come to 1/27.  

step-by-step explanation:

so first find out how much each is worth.

quarter= 25 cents

dime= 10 cents

pennies= 1 cent

then multiply each by how much each is worth.

200                     150                   300

x                         x                     x   1

  25                       10              

                                  300

1000                     1500

+                          

4000                                      

5000                                  

then count 2 from the back and add a period.

$50.00

$15.00

$3.00

and then add them

  $50.00

+

  $15.00

+

    $3.00

$68.00

so sunghee has $68.00

read more on -

a - base

b - exponent

so,