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Comment on Bit of Everything
Hello, I am a little confuse.
The rule, 1/(a/b) = b/a, is
The rule, 1/(a/b) = b/a, is correct, but we don't have a 1/(a/b) situation here.
I'm using the fact that (a/b)/(c/d) = (a/b) x (d/c)
Great, I was confused.Thanks
hello why did you multiply?
When dividing by a fraction,
When dividing by a fraction, we multiply by the reciprocal.
That is: a/b ÷ c/d = a/b x d/c
So, for example: 2/3 ÷ 8/11 = 2/3 x 11/8
Likewise, (3/4)/(2/5) = (3/4)(5/2)
So, in the video solution, we have (16^something)/(1/27^something)
Applying the rule for dividing by fractions, we get:
(16^something)/(1/27^something) = (16^something)(27^something/1)
= (16^something)(27^something)
More here: https://www.greenlighttestprep.com/module/gre-arithmetic/video/1069
Does that help?
Cheers,
Brent
yes, thank you!!
I GOT THIS RIGHT!! yay! I
Thank you Brent! These video lessons and practice questions are so useful!
Nice work! Keep at it!!
Nice work! Keep at it!!
Cheers,
Brent
So I thought it was B, but