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Person weighing 650N lies on a bed of nails,each nail has area of 1m2 Assume 4Nm^2 pressure is painful what is the smallest number of nails they could lay on and not be hurt
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Sara brought a total of 8 nails at ace hardware . she purchased both 6 penny nails and 10 penny nails . she brought 2 more 6 penny nails then she did 10 penny nails . she had a total of 8 mails. How many 6 penny and 10 penny nails
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