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 -

Question

• 5 : 8
• 10 : 9
• 8 : 5
• 9 : 10

Answer 1

9 : 10