# math

posted by .

a textbook has 50 more than two times the number of pages as a workbook. combined, they have 230 pages. how many pages are in the textbook?

• math -

text book = 50 + (2 x Z)

let Z= workbook

textbook + workbook = 230 pages

[50+(2Z)] + Z = 230

50 + 3Z =230

3Z= 180

z= 60

Text book = 50 + 2Z

text book = 50 + 2(60)

Text book = 170

REMEMBER:

50 more, really means "plus 50" in an equation

2 time the number of pages a work book, really mean "2Z" where Z = work book

## Similar Questions

1. ### Math (sort of?)

Does anyone know how to get the special NY pages on an online textbook?
2. ### math

if i have a book of 30 pages and i want to number each pages what will be the digit for the thirty pages
3. ### Math

Four classmates are comparing the number of pages that they have read in a novel assigned for their language-arts class. Ken has read twice as many pages as Jenny. Alicia has read 18 pages more than Jenny and 11 pages more than Mark. …
4. ### Math

This needs to be worked backwards. Four classmates are comparing the number of pages that they have read in a novel assigned for their language-arts class. Ken has read twice as many pages as Jenny. Alicia has read 18 pages more than …
5. ### Math

Ms Lin has 6 hrs to finish a 400 page book. She has already read 150 pages. She read 40 pages in the first hour. What is the approximate number of pages she must read per hour to finish the book. if she read 40 pages in 1 hour. She …
6. ### Math

Hi I'm having some trouble with this question: The selling price of a mathematics textbook is related to the number of pages in the text. A 300 page book sells for \$25 and each additional 10 pages increases the price by \$1. - What …
7. ### Math Fractions

Warren read 1/6 of the pages of a book last Monday. Tuesday he read 2/5 of the remainder of the pages. Wednesday he read 1/3 of the remaining pages. He has 60 more pages left to read. How many pages does the book have?
8. ### math

1. What is the experimental probability that the next customer buys any red notebooks?
9. ### math

It takes Bill 24 minutes to type and spell check 10 pages. Find how many pages he can type and spell check in 5.5 hours. Round to the nearest whole number if necessary. A. 55 pages B. 138 pages C. 792 pages D. 229 pages
10. ### math

Tyler used 2989 digits to number the pages of a book. How many pages does the book have?

More Similar Questions