Find the percent of increase or decrease to the nearest percent…
1. 8 to 10
2. 45 to 18
3. 12 to 4
4. 15 to 20
2 answers
8 to 10, that is an increase of 2, or 2/8=25 percent
8 x = 10
x = 1.25
so
10 = 8 + 25% of 8
is that true?
8 + 8/4 = 8 + 2 = 10
sure enough 25%
x (45) = 18
x = 18/45 = .4
so it is only 40 % of original which is a decrease of 100 - 40 = 60% decrease
is that true?
60% of 45 = 27 is decrease
45 - 27 = 18 sure enough
x = 1.25
so
10 = 8 + 25% of 8
is that true?
8 + 8/4 = 8 + 2 = 10
sure enough 25%
x (45) = 18
x = 18/45 = .4
so it is only 40 % of original which is a decrease of 100 - 40 = 60% decrease
is that true?
60% of 45 = 27 is decrease
45 - 27 = 18 sure enough
2 answers