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| quote: | Originally posted by tribu
I think youve got the right idea.
30/100 = x/42
42·30 = 100x
1260 = 100x
x=12.6
so 12.6% of the time, it works 42% of the time?
Weird, Id thought it would have been more. |
you did it backwards.
remember that you're comparing 2 different ratios.
so 3o%=100
and 42% of the time = x, cuz we don't know ex.
then you cross multiply.
so 32x=4200
so 42% of the time, it works 140% of the time
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