Homework Help: MATH

Posted by Callie on Sunday, October 30, 2011 at 7:50pm.

The chess club had 14 members at the beginning of the year and the membership increased by 50% by the end of the year?
a: how many members were there at the end of the year?
b: By the end of the next year there were only 14 members. What percent decrease was this?

MATH - Ms. Sue, Sunday, October 30, 2011 at 7:52pm
1.5 * 14 = 21

b.

21 - 14 = 7

7/21 = 0.33333 = 33.3%
MATH - bobpursley, Sunday, October 30, 2011 at 7:53pm
a) 1.50*14=?
b) 14=21(1+i)
2/3= 1+i
i=-1/3 or 33.3 percent decrease

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