SOLUTION: 1. What number increased by 30% = 260? 2. What is 66 2/3% less than 45? 3. A price decreased from $25 to $10. Find the % of the decrease. 4. A price increased from $30 to $50.

Question 30032: 1. What number increased by 30% = 260?
2. What is 66 2/3% less than 45?
3. A price decreased from $25 to $10. Find the % of the decrease.
4. A price increased from $30 to $50. Find the % of the increase.

Answer by Cintchr(481) (Show Source): You can put this solution on YOUR website!
% of in crease and % of decrease follows a simple formula

Lets start with problem #3

or
or 60%
Problem #4

or
2/3 = .6 repeating ........
66 2/3%
Now for the first two:
1. What number increased by 30% = 260?
1x + .3x = 260
1.3x = 260
x = 200
2. What is 66 2/3% less than 45? (66 2/3 % ... from prob #4 is 2/3)
1x = 45 - 2/3x
4/3x = 45
x = 33 3/4

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