word problem

Last month, a parking lot had 23 spaces in each of its rows. Recently, the lost was expanded, and 4 spaces were added to each row. If the lot has 8 rows, how many spaces are there now? 23 spaces + 4 additional spaces = 27 spaces 27 spaces * 8 rows = 216 spaces

If a number is increased by 16 and then divided by 3, the result is 8. Let x be the number. We have: (x + 16)/3 = 8 Cross multiply x + 16 = 24 Using our equation calculator, we get: x = 8

What number when multiplied by four exceeds itself by 42? Let the number be n. We have: 4n = n + 42 Subtract n from each side: 3n = 42 Divide each side by 3 n = 14

a group of students and teachers are going on a field trip. one ninth of the group will fit on 1/3 of a school bus how many buses are needed to transport the entire group 1/9g = 1/3b We want to find g, so we multiply each side through by 9 g = 9/3b Simplify: g = 3b, so we need 3 buses

Jennifer spent $11.25 on ingredients for cookies shes making for the school bake sale. How many cookies must she sale at $0.35 apiece to make profit? Let x be the number of cookies she makes. To break even, she must sell: 0.35x = 11.25 Use our equation calculator, and we get: x = 32.14 This...

An oil tank contains 220.2 gallons of oil. Whenever the amount of oil drops below 90 gallons, an alarm sounds. If 145.3 gallons are pumped into a delivery truck, how many gallons must be pumped back into the tank in order to shut off the alarm? I'm doing a remedial math course and I need help...

4 balls in package. 8 packages of balls in a carton. how many balls would be in 125 cartons? We have 4 balls per package * 8 packages per carton * 125 cartons 4,000 balls

The basketball team is selling candy as a fundraiser. A regular candy bar cost 0.75 and a king sized candy bar costs 1.50. In the first week of the sales the team made 36.00. Exactly 12 regular sized bars were sold that week. How many king size are left? Let r be the number of regular bars and...

Ava set her watch 2 seconds behind, every day it sets back 1 second. How many days has it been since she last set her watch if it is 41 seconds behind? Right now: Watch is 2 seconds behind Let d be the day after right now (1)d + 2 = 41 d + 2 = 41 Subtract 2 from each side d = 39

Let the numbers be x and y. Set up our givens: x + y = 83 x - y = 17 Add equation (1) to equation (2) x + x + y - y = 83 + 17 The y-terms cancel out: 2x = 100 Divide each side by 2: 2x/2= 100/2 x = 50 Plug x = 50 into equation (1) 50 + y = 83 Subtract 50 from each side: 50 - 50 + y = 83 -...

Jake used 5 boxes to pack 43.5 kg of books. If the boxes each weighed the same and held 8 books, what did each book weigh? Set up equations were w is the weight of each book: 5 boxes * 8 books * w = 43.5 40w = 43.5 Divide each side by 40 w = 1.0875 kg

There are 13 animals in the barn. some are chickens and some are pigs. there are 40 legs in all. How many of each animal are there? Chickens have 2 legs, pigs have 4 legs. Let c be the number of chickens and p be the number of pigs. Set up our givens: (1) c + p = 13 (2) 2c + 4p = 40 Rearrange...

Since apples and oranges are both fruits, we add 10 + 6 to get 16 fruits.

Set up a proportion of pineapple chunks to dollars: 1/2 = x/10 Use our proportion calculator: x = 5

A medium orange has 70 calories. This is 10 calories less then 1/4 of the calories in a sugar krunchy. How many calories are in a sugar crunchy? Let s = calories in a sugar crunch. Let o = 70 be the calories in a medium orange. Set up the equation: o = 1/4s - 10 70 = 1/4s - 10 Add 10 to each...

Mr. Wilson wants to park his carin a parking garage that charges 3 per hour along with a flat fee of 6. If Mr. Wilson paid 54 to park in the garage, for how many hours did he park there? Set up an equation, where f is the flat fee, and h is the number of hours parked: 3h + f = 54 Substitute f...

You and your friend are saving for a vacation. You start with the same amount and save for the same number of weeks. You save 75 per week, and your friend saves 50 per week. When vacation time comes, you have 950, and your friend has 800. How much did you start with, and for how many weeks did...

The science club charges 4.50 per car at their car wash. Write and solve and inequality to find how many cars they have to wash to earn at least 300 Let x be the number of cars they wash. Set up our inequality. Note, at least 300 means 300 or greater, so we use greater than or equal to...

p(t)=6t represent the number of people p(t) that a number of turkeys can feed at Thanksgiving. How many people can 6 turkeys feed? Plug in t = 6 p(6) = 6(6) p(6) = 36

At 1:00 pm you have 24 megabytes of a movie and at 1:15 pm you have 96 megabytes of a movie. What is the download rate in megabytes per minute? First, find the number of minutes: 1:15 - 1:00 = 15 minutes Next, determine the difference in megabytes 96 - 24 = 72 Finally, determine the download...