# math

posted by .

75% of teenagers own cell phones and ofthose who own cell phones, 87% use text messaging.

1. What % of teens own cell phones AND text?

2. Among those who own cell phones and text, 15% send more than 200 texts a day, or more than 6,000 texts a month.

What % of all teens own a cell phone, texters, and send moe than 6,000 texts a month?

• math -

75% of teenagers own cell phones.
87% use text messaging.
15%

• math -

1. .75 * .87 = ?

2. .75 * .87 * .15 = ?

## Similar Questions

1. ### any grammatical errors with this sentence?

The use of cell phones would not be as pervasive if it was indeed not remarkable. Thank you for using the Jiskha Homework Help Forum. This sentence is not clear to me. Are you saying that the use is remarkable or that phones are remarkable?
2. ### computer studies

the use of cell phones impove productivity?
3. ### college algebra

suppose the revenue in dollars from selling x cell phones is R(x)= -1.2x^2+220x. the cost in dollars of selling x cell phones is C(x)=0.05x^3-2x^2 +65x+500. find the profit function P(x)=R(x)-C(x). find the profit if x=15 hundred cell …
4. ### Statistics

12. The proportion of students who own a cell phone on college campuses across the country has increased tremendously over the past few years. It is estimated that approximately 94% of students now own a cell phone. Twenty five students …
5. ### Algebra 1

Mrs. Crenshaw has confiscated 4 cell phones from 4 different students because they used them during class. To get the cell phones back, they have to answer the following question: What is the probability that no student receives his …
6. ### algebra

. Mrs. Crenshaw has confiscated 4 cell phones from 4 different students because they used them during class. To get the cell phones back, they have to answer the fol- lowing question: What is the probability that no student receives …
7. ### Math

It takes a company 4hrs to build 1,300 cell phones. If the company continues working at the same rate, how many hours will it take to bulid 39,000 cell phones?
8. ### Math

A company selling cell phones has a total inventor of 800 phones. Of these phones, 400 are smartphones and 240 are black. If 200 phones are not black and not a smartphones, how many are black smartphones?
9. ### Stats

Suppose the number of cell phones in a household has a binomial distribution with parameters n = 17, and p = 40 %. Find the probability of a household having (Keep at least 4 digits) (a) 11 or 13 cell phones?
10. ### math

Paulo earns a salary of 15000\$ per month for selling cell phones. He receives an extra 30\$ for each cell phone over 100 units that he sells. How much will be make if he sells R cell phones?

More Similar Questions