120
How about: 2*120 = 240
240
you can multiply by 2, or add 120, or divide by 1/2. I'd say it's best to multiply, or find the "product."
200 multiply 120% = 240
There are 240/2 = 120 of them
240+120=360.
The LCM is 240.
240
240
Prime factor each number and then multiply all the common factors to get the GCF.120=2x2x2x3x5240=2x2x2x2x3x52x2x2x3x5=120 is the Greatest Common Factor
divide 240 by 2 and.. voila.. you get 120!