Equations
5x+20=50
x=6
Joann has a bag with 12 marbles. Four are red, 2 are blue, and 5 are green. What is the probability that she draws either a red or blue marble?
What is 1/2 or 50%?
10x10
100
20/5
4
12x-30=6
x=3
For the past year, Joe put a $10 bill in a jar on the months that had 30 days, a $20 bill on the days that had 31 days, and a $50 bill on the month that had 28 days. If he reaches in the jar and pulls out a bill, what is the probability that he will draw either a $50 bill or $10 bill?
5/12 or 41.7%
12x12
144
42/7
6
35x+700=1400
x=20
Samantha puts all of the letters of her name into a bag a draws one at random. What is the probability that the letter she draws is NOT an "A?"
5/8
22x40
880
96/12
8
-10x+50=130
x=-8
A teacher puts all of her students names in a random name picker. There are 8 girls, and 14 boys in her class. What is the probability that she draws a girls name? *hint-reduce!*
4/11
297
216/3
72
4.5x+4.25=22.25
x=4
There is a dish that contains 5 kinds of candies: jelly beans, gummy bears, chocolate, peppermints, and gum. There is a total of 80 pieces of candy and an equal amount of each. What is the probability of selecting either a chocolate of a peppermint?
2/5
43x52
2236
567/7
81