Given that 24 carat gold is pure gold, 18 carat gold [3/4] gold and 20 carat gold is [5/6] gold. Find the ratio of the pure gold in [18] carat gold to the pure gold in [20] carat gold

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

5:8

9:10

15:24

8:5

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Concept- To answer this question, we use the concept that 18K gold is

,Pure gold and 20, Carat gold is

For pure gold, 24k gold is pure gold, so you can easily get the ratio you need by entering a value and further examining the ratio.
Given 24 carat gold is pure gold
18 carat is

of pure gold
20 carat gold is

gold
The ratio of pure gold in 18 carat gold in 20 carat gold is :

This is because you can multiply "a" by the reciprocal of "b" by dividing a value such as "a" by a value such as "b".

Hence, the correct answer is option 2) 9 : 10

Watch 3-min video & get full concept clarity

tricks from toppers of Infinity Learn

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

🔥 Start Your JEE/NEET Prep at Just ₹1999 / month - Limited Offer! Check Now!

Get Expert Academic Guidance – Connect with a Counselor Today!

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET