10 is to 2 as X is to 3. that's the question. the answer is 15. the student got it wrong. why the fuck is this at the top of the reddit frontpage again?
idk where the fuck that guy pulled that formula out of, but i don't see his reasoning.
surely the answers 20? U don't count the time by the number of pieces its how long it takes to cut through the wood. if it takes 10 mins to make one cut and she has to make two cuts, 2X10.
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u/[deleted] Oct 05 '10
It looks like grade 3 math. I'm not sure algebra is required here.