Simple Probability
A hat contains 8 orange, 20 purple, 9 pink, and 3 brown slips of paper. A slip of paper is selected without looking. Find the probability of selecting a pink slip. Present your answer as a fraction in simplest form.
9/40
There are 6 orange marbles, 2 red marbles, 3 white marbles, and 4 green marbles in a bag. Once a marble is drawn, it is replaced. Find the probability of getting a red then a white marble. Present your answer as a fraction in simplest form.
2/75
Find the simple interest to the nearest cent.
$850 at 6% for 2 years
$1,750
John flipped a coin 25 times and it landed on tails 17 times. What is the experimental probability that the coin will land on tails? Express your answer as a decimal.
0.68
5 + 3r = 5r – 19
r = 12
Tyler has 14 video games. Five are action/ adventure games, 2 are arcade games, 1 is a racing game, and 6 are sports games. Tyler cannot decide which game to play, so he will choose one without looking. What is the probability that the game he chooses is an arcade game? Present your answer as a fraction in simplest form.
1/7
Find the probability of a coin landing on heads and a six-sided die landing on a multiple of 2. Express your answer as a percent.
25%
Donnell borrowed $5650 for his first semester of college. He will be paying 6.5% in simple interest over the next 5 years. What is the total amount of interest he will be paying on the loan?
$1836.25
John flipped a coin 25 times and it landed on tails 17 times. If he flipped the coin 40 times about how many times would you predict it to land on tails?
Find the slope of a line that passes through (6, 1) and (8, 5)
2
Jessie has a deck of cards with shapes on each card. There are 20 cards with squares, 25 cards with circles, 34 cards with trapezoids, and 16 cards with parallelograms. A card is selected without looking. What is the probability that Jessie selected a card with a circle? Present your answer as a fraction in simplest form.
5/19
There are 6 orange marbles, 2 red marbles, 3 white marbles, and 4 green marbles in a bag. Once a marble is drawn, it is replaced. Find the probability of getting two marbles in a row that are not white. Present your answer as a fraction in simplest form.
16/25
Find the simple interest to the nearest cent.
$1200 at 4.25% for 18 months
$76.50
The probability of pulling a pretzel out of a bag of trail mix is 4 pretzels for 6 oz. How many pretzels would you expect there to be in a 20 oz. bag?
about 13
John flipped a coin 25 times and it landed on tails 17 times. Theoretically the coin should land on tails 50% of the time. If he wants his experimental probability to get closer to the theoretical probability, what should he do?
increase the amount of times he flips the coin
Paige recorded the number of hits four players had out of 100 at bats. Liam had 54 hits, Jarrod had 39 hits, Kyle had 28 hits, and Niall had 42 hits. What is the probability (as a percent) that Liam did not get a hit?
46%
There are 2 green marbles, 7 blue marbles, 3 white marbles, and 4 purple marbles in a bag. Once a marble is drawn, it is not replaced. Find the probability of three purple marbles in a row. Present your answer as a fraction in simplest form.
1/140
Mariah borrowed $1200 to buy a new computer system. She paid $144 in simple interest at a rate of 6%. How long did it take her to pay off the loan?
2 years
Spinning one spinner two times. Independent or Dependent event?
Independent
What is the slope in the equation y + 2.5x = 7?
-2.5x
A company produces 800 engines each day. A report shows that 12 engines produced each day have a defect. What is the probability (as a percent) that a randomly selected engine does not have a defect?
98.5%
A set of dominoes contains 91 tiles, with the numbers on the tiles ranging from 0 to 12. There are 13 tiles that have the same number on each end. These tiles are called doubles. To begin a game, each player draws one tile, which is not returned to the pile. What is the probability that the first and second players each draw a double?
2/105
Lin borrowed $950 for a new laptop. She will pay $25.80 each month for the next 48 months. Find the simple interest rate for her loan. (Round to the nearest tenth of a percent.)
7.6%
There are 10 seventh graders and 12 eighth graders on a baseball team. What is the probability that two eighth graders will be selected as captain?
2/7 or 28.6%
–6y – 3 = 3 – 6y
no solution