Question 1002749: 1. if a stack of 42 business cards is 3/8 inch thick, how thick is one buiness card?
Answer by addingup(3677)   (Show Source):
You can put this solution on YOUR website! 3/8 divided by 42. Any number divided by 1 equals the number. So you can turn any number into a fraction by putting it over 1:
(3/8)/(42/1) How do you divide fractions? You flip the divisor and multiply:
(3/8)/(42/1)= 3/8*1/42 Multiplying fractions is the easiest, you multiply straight across and do not have to worry about common denominators or anything:
3/8*1/42= 3*1/8*42= 3/336 Simplify, divide both sides by 3:
1/112 is the thickness of 1 card
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