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20% of 20% of a number is 20. What is that number? (1) 200 (2) 400 (3) 500 (4)2000

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20% of 20% of a number is 20. What is that number?

(1) 200

(2) 400

(3) 500 

(4)2000

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2 Answers

+1 vote
by (43.9k points)

Correct option is (3) 500

0 votes
by (15 points)
(20x/100) ×(20x/100) =20

(x/5) ×(x/5) =20

X=25×20

X=500
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