Given that, 24 carat gold is pure gold, 18 carat gold is 3/4th of pure gold and 20 carat gold is 5/6th of pure gold, the ratio of the pure gold in 18 carat gold to the pure gold in 20 carat gold is -
A. 5 : 8
B. 10 : 9
C. 8 : 5
D. 9 : 10
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সঠিক উত্তরঃ
D.
9 : 10
Explanation:
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