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Mathematics 17 Online
OpenStudy (anonymous):

PLEASE HELPP MEE!!! Victoria selects a card at random from a box of blank greeting cards. The box has 5 "Happy Birthday" cards, "Thank You" cards, and 4 "Get Well Soon" cards. What is the probability that she selects a "Thank You" or "Get Well Soon" card? A)15% B)66% C)75% D)95%

jimthompson5910 (jim_thompson5910):

How many cards are there total?

OpenStudy (anonymous):

20

jimthompson5910 (jim_thompson5910):

how are you getting that?

OpenStudy (anonymous):

5 hb cards 11 ty cards and 4 gws cards.

jimthompson5910 (jim_thompson5910):

oh didn't see the 11

jimthompson5910 (jim_thompson5910):

good, so 20 cards total

OpenStudy (anonymous):

it wasnt there i forgot to put that

jimthompson5910 (jim_thompson5910):

how many are "ty" and "gw" cards?

OpenStudy (anonymous):

15

jimthompson5910 (jim_thompson5910):

good, now divide 15 into 20 to get ?

OpenStudy (anonymous):

0.75

jimthompson5910 (jim_thompson5910):

you got it, then multiply by 100 to get your final answer

OpenStudy (anonymous):

so 75%?

jimthompson5910 (jim_thompson5910):

yes, you nailed it

jimthompson5910 (jim_thompson5910):

very nice

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