Geometry
posted by Chitra .
On one side of a scale there are 6 coins, 3
weighing 2 grams each and 3 weighing x grams
each. The scale is balanced if 5 coins weighing
x grams each are placed on the other side of
the scale.
How much does each of the unknown coins
weigh?
Answer in units of gram

3 grams. If you make the equation
3(2)+3x=5x
then simplify to
6+3x=5x
Then move
6=5x3x
then simplify
6=2x
then answer
6/2=3
x=3
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