# in a certain math class, each student has a text book, every 2 students share a book of tables, every 3 students share a problem book, and every 4 students share a mathematics dictionary. If the total number of books is 75..

how many students are in a class?

how many students share tables?

how many students share a problem book?

how many students share a math dictionary?

write the equattion

solve the equation

find the solution

answer each question

You posted this question twice. It has already been answered

i think u answered it wrong? i do not even understand what u did..

Customers of a phone company can choose between two service plans for long distance calls. The first plan has a $17 one-time activation fee and charges 8 cents a minute. The second plan has no activation fee and charges 12 cents a minute. After how many minutes of long distance calls will the costs of the two plans be equal?

16 years ago

15 years ago

## The favorite colors of Patty,Jenna,Matt and Tom are brown,blue,red,and purple.No person's name has the same number of letters as his or her favorite color.Jenna and the girl who likes blue are in different grades.Red is the favorite color of one of the boys.Find each person's favorite color and show your work.

13 years ago

## at a recycling plant, crusher 1 can crush three tons of glass in 5 hours. If crusher 2 is used in conjunction with crusher 1, it would take 2 hours to crush three tons of glass. How long would it take crusher 2 alone to crush three tons of glass? Round your answer to the nearest hour and minute.

10 years ago

## Peter's age is less than 4 times Carol's age. The difference of their ages is 33. Find Peter's age and Carol's age.

HINT: Two equations, two variables

7 months ago

## To find the number of minutes after which the costs of the two plans will be equal, we can set up an equation using the given information.

Let's denote the number of minutes as "m".

For the first plan, the cost would be 17 + 0.08m (activation fee plus 8 cents per minute).

For the second plan, the cost would be 0 + 0.12m (no activation fee plus 12 cents per minute).

We can set up the following equation:

17 + 0.08m = 0 + 0.12m

Now, let's solve this equation to find the value of "m".

Subtracting 0.08m from both sides of the equation:

17 = 0.12m - 0.08m

Simplifying:

17 = 0.04m

Dividing both sides of the equation by 0.04:

17/0.04 = m

425 = m

Therefore, after 425 minutes of long distance calls, the costs of the two plans will be equal.

Please let me know if you need any further assistance!