Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:
In a certain city, the ratio of the number of people who purchase newspaper X to the number of people who purchase newspaper Y is 7:1. What percent of the population purchases newspaper Y?
1) 27% of the population purchases neither newspaper X nor newspaper Y.
2) 70% of the people who purchase newspaper Y also purchase newspaper X.
Please explain your work.
this is a set problem
total= x + y - subset xy +N (people who neither buy X nor Y).
we can sustitute x=7y. 1 tells us xy and 2 tells us N. so we can have the total in terms of y and thus we can find the direct relationship b/w y and the total.
OA is C?
can you explain why statement I is not enough? if we know that 73% of people read papers, that means one eights of 73% read y. am I wrong?
You're assuming that people either A) purchase ONLY X or B) purchase ONLY Y. Some people may purchase both (in this case, 70% of people who purchase Y do) and will thus be counted twice. We need to know how many purchase both and how many purchase neither to get our answer
: Social ventures, both non-profits and for-profits, seek to better the world in such industries as education, microfinance, workforce development, public health and community development, among others. Organizations that...