SOLUTION: If 2/3 of a number is 30, what is 1/3 of twice the number?

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Question 1520: If 2/3 of a number is 30, what is 1/3 of twice the number?
Answer by ichudov(499) About Me  (Show Source):
You can put this solution on YOUR website!
Stupid way of solving it: First you need to find out the number.
%0D%0A%282%2F%0D%0A%0D%0A3%29%2Anumber+=+30
number+=+30%2A%283%2F2%29
number = 45
twice the number is twice 45 is 90
1/3 of 90 is 30.
Smarter way of solving it: two thirds is the same as 1/3 of twice, it is another way of saying the same thing. So, then, if 2/3 of a number is 30, 1/3 of twice the number is the same thing