Saturday

November 22, 2014

November 22, 2014

Posted by **chris** on Thursday, January 28, 2010 at 11:33pm.

- math -
**Reiny**, Thursday, January 28, 2010 at 11:42pmlet the number of people in the original group be n

then the cost/person = 40/n

new group = n+3

cost per person in new group = 40/n - 3

but (40/n - 3)(n + 3) = 40

expanding, multiplying each term by n and simplifying gave me

n^2 + 3n - 40 = 0

(n+8)(n-3) = 0

n = -8 or n = 5

(can't have negative number of people, so

n = 5

there were 5 people in the original group and each paid $8

**Answer this Question**

**Related Questions**

Math - Given (a+2,a-2)= a for all integers a, (6,2)= a) 3 b) 4 c) 5 d) 6 e) 8 ...

math - A group of friends went to Mudville to watch the Mudville Sluggers play ...

math - on school picnic,a group of students agree to pay equally for the use of ...

Art - The picture is of colorful clogs. Through this collection, you can gain a ...

statistics - a sample of 120 men and women randomly divided into 3 groups with ...

Math - The admission ticket of an amusement park is $50 per head, and there is a...

algebra - If Sam Stevens and four other friends want to schedule a 6 hour ...

maths - number of films seen by a group of people during the past year No of ...

math - Eighty people are separated into 2 groups. The first group is 8 less than...

math 1 - The total outing cost for a group of people amounted to Php 8000. When ...