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Kaikerscupcake
Hey there! :D

Since 50% is half of 100%, it would also be half of 42. 

42/2 <== that can be used to determine 50%

42/2= 21

50% of 42 is 21. 

You could also use this:

42*.5= 21 <== this also works

I hope this helps!
~kaikers 

Answer:

42 divided by 2

Step-by-step explanation:

50% means half of something

hoped this helped

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