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84 is 20% of 420

Problem Worked out:

**it may be easier for you to picture with numbers ontop of eachother.

(84/X) = ( 20/100)

(Cross Mulitply)

20X = 84 x 100

20X = 8400

(divide both sides by 20 to get X alone)

(20X/20)= (8400/20)

X = 420

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15y ago

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