A box contains 5 black and 2 white balls. 2 balls are drawn without replacement. Find the probability of drawing 2 black balls.
First draw probability of black is:
Total Balls in box = Black balls + white balls
Total Balls in Box = 5 + 2
Total Balls in Box = 7
P(Black) = Black Balls / Total...
15 mins into fraction of an hour
An hour is 60 minutes, so we have the fraction:
15/60
But we can simplify this fraction. We type in 15/60 into our search engine, click Simplify, and we get:
1/4
The girl’s hockey team won 6 games, lost 3 games, and tied 2 games. What fraction of games did they win?
Win Fraction = Won Games / Total Games Played
Win Fraction = 6 / (6 + 3 + 2)
Win Fraction = 6/11
Alvin, an HR Director has 12 employees in his department. There are still 3 positions to be filled up. What fraction of the entire staff are still available?
If 3 spots need to be filled, then we have 12 - 3 = 9 people still available.
9/12 = 3/4
A loaf of bread has 35 slices. Ann eats 8 slices, Betty eats 6 slices, Carl eats 5, and Derrick eats 9 slices. What fraction of the loaf is left?
Calculate total slices eaten:
Slices eaten = Ann + Betty + Carl + Derrick
Slices eaten = 8 + 6 + 5 + 9
Slices eaten = 28
Calculate remaining slices...
Marcus drives a machine that paints lines along the highway. He needs to paint a line that is 9/10 of a mile long. He is 2/3 of the way done when he runs out of paint. What fraction of a mile has he painted?
Marcus has painted 2/3 of 9/10.
If we type 2/3 of 91/20 in our search engine, we get:
3/5
In a certain lot, there are 16 white, 7 red, 8 blue, and 9 black cars. You randomly pick a set of keys to one of the cars. What is the probability of choosing a set of keys to a blue car?
Our total cars are:
Total Cars = White Cars + Red Cars + Blue Cars = Black Cars
Total Cars = 16 + 7 + 8 + 9...
Bob can complete 35 math problems in 5 minutes how many can he complete in 1 minute
35 math problems / 5 minutes
Divide the top and bottom of the fraction by 5:
35 math problems / 5 minutes = 7 math problems per minute
I have saved 24 to buy a game which is three-fourth of the total cost of the game how much does the game cost ?
Let the cost of the game be c. We're given:
3c/4 = 24
To solve this equation for c, we type it in our search engine and we get:
c = 32
On a trip, a family drove 270 kilometers in 3 hours. how many kilometers were traveled in one hour. Express this as a rate per hour.
270 kilometers per 3 hours
270/3
Divide top and bottom by 3 to get km/hr
90 kilometers per hour
A single card is drawn from a standard 52 card deck. What is the possibility that the card drawn is either a 4 or a 6
There are 4 (4's) and 4 (6's) in a standard 52 card deck.
P(4 or 6) = P(4) + P(6)
P(4 or 6) = 4/52 + 4/52
P(4 or 6) = 8/52
We can simplify this fraction by typing it in our...
Zachary has 25 country music CDs, which are one-fifth of his CD collection. How many CDs does Zachary have?
Let the number of Zachary's CD's be:
25 * 1/5 = 5 country music CD's
A cook has 2 3/4 pounds of ground beef. How many quarter-pound burgers can he make?
Using our mixed number calculator, we see:
2&3/4 = 11/4
A quarter pounder is 1/4, so we have:
11 * (1/4) = 11/4
So we can make 11 quarter pound burgers
Jack reads 90 pages of a book in six hours. What is the average number of pages he read each hour
90 pages / 6 hour = 90/6
Type 90/6 in our search engine, click simplify, and we get:
15 pages per hour
Carrie had $32 when she got to the carnival. After riding 6 rides, she had $20 left. What was the price for each ride?
If Carrie had $20 left, then the rides cost:
$32 - $20 = 12
Price per ride = Cost per all rides / Total Rides
Price per ride = 12/6
Price per ride = 2
A cook has 2 3/4 pounds of ground beef.How many quarter-pound burgers can he make?
2 & 3/4 converts to 11/4 in our fraction converter.
A quarter-pound burger is 1/4 of a pound.
11/4 = 1/4 * 11, so the cook can make 11 quarter-pound burgers
A computer was on sale. The original cost of the computer was $900. It’s on sale for 5/6 the price. How much is the computer now?
We want 5/6 of 900. We type this in our search engine and we get:
750