You guys are not all equally as crazy, Dave. "Teacher say"??? Because of that, right? "Teacher say, teacher say, teacher say" "WHAT?"
learning curve incorporated into problem. 100% faster 2nd time around. 1st cut = 10 mins 2nd cut = 5 mins OR measure = 5 mins, cut = 5 mins 1st cut = 5 + 5 = 10 2nd cut = 0 (already measured both cuts up front) + 5 = 5 yeah, stupid question
Terrible question. You can look at it two ways: (1) It takes 10 minutes per cut. You need two cuts to make 3 pieces. Thus, 20 minutes. (2) It takes 10 minutes to acquire 2 pieces, thus 5 minutes per piece. For three pieces, that'd be 15 minutes. Answer (1) makes a lot more sense and seems a lot more correct to me. The only way (2) could be correct is if each piece took a separate cut (like, cutting circles out of the board or something). But since that's not specified anywhere, it's just a horrendous question.
algebra fail. Code: Given: pieces = cuts + 1 rate = 1 cut per 10 minutes Then: p = c + 1 3 = c + 1 2 = c m = 10 * c m = 10 * 2 m = 20 :grin:
Wait a second. Why does it take 10 minutes to cut a piece of board? I could have done it in 1 minute with a power saw and or maybe 2 minutes with an actual saw. This question doesn't make any sense at all.
Given the wording, the question is clearly asking (1), so the teacher is wrong. For the question to ask (2), it would need to say that you cut two pieces from the board, rather than cut the board into two pieces.
If takes 10 minutes to make a cut. Then it takes 20 minutes to make two cuts in the second board... therefore it takes 30? She's obviously not working at the same pace if she is able to cut the second board twice at 5 minutes for each cut... or... It takes 5 minutes per piece so 15 minutes... or... She works just as fast to cut the board so... 20 minutes total ... If this question were worded better...
Depends on how you want to cut it. Are we talking about equal sized pieces? Assuming the board is square-shaped, for example, she can cut thin piece out of it, and then cut the thin piece in half along the shorter side rather quickly.
