I made it 830. Start again. 80 potatoes. Half them (as we do, becaue a whole potato unless they are small takes too long to cook) makes 160. Add 6. OK That's 166. Then multiply by 5 = 830 (actually I thought it was 560 the first time - it's late OK my head isn't so good). But again, it could be a trick question. The line asked "divide them by half" which isn't necessarily halfing them.
Right there are several ways the actual sum can be looked at. But you only have 80 potatoes to start with. The rest of the question only mentioned sums, nothing to do with your 80 potatoes. So you still have 80 potatoes? I'm getting a headache, I think I'll go to bed...
Excuse-moi? Didn't I say that about 15 million posts back? AND I wasn't the first...Pretty Dark Horse said it too..then you said to look at the problem in a simpler fashion or words to that effect. So I went back to the 80 tatties you started with.. Right I really do have a headache now...I am going!
830 huh? Well yes, but only if you consider the original 80 potatoes were cut 'in half', and not 'by half' as you put it. At that point there would still be 80 potatoes. Your phrasing is faulty if your intended answer was 830. 830 what?
You also didn't specify whether to add 6 'potatoes', or just the number 6.
I still think the final adding and multiplying are just window-dressing.
The last part of the question is the most telling: "How many potatoes do you have?"
No..I'm sorry, the answer is stil 40 (or 80) potatoes. So there. Good night.
11 = 6, 12 = six. as BP said. or to put it another way eleven has 6 letters and twelve has six letters, that's the sequence your using. The other problem is solved by the mathematical rule we used in school of BODMAS the order of calculations in an equation; Brackets, Of, Division, Multiplication, Addition, Subtraction.
Actually, this is a tricky question. I used to have a friend, a math teacher and he was always challenging my son with these kind of questions. By coincidence, he gave him this one and I remember the solution. They're hoping that you do this:
80/2 + 6 x 5.
What you should actually do is this:
80 divided by 1/2 + (6 x 5).
80 divided by 1/2 is the same as 80 x 2 (by the invert-and-multiply rule), so 80 divided by half is actually 160.
So now you have 160 + (6 x 5).
The order of operations dictates that you multiply before you add. 6 x 5 is 30. 160 plus 30 is 190.
The correct answer is 190. The answer most people would get is 230 (the result of 40 + 6 x 5).
The number sequence that blondepoet got right (congrats, BTW!) - that's just another version of "The Magic Number." Four is The Magic Number, because all numbers eventually lead back to four by this process.
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