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.
A. $5:8$
B. $9:10$
C. $15:24$
D. $8:5$
Answer
Verified
489.6k+ views
Hint- In order to deal with this question we will use the concept as $18$ carat gold is \[3/4\]of pure gold and \[20\] carat gold is \[5/6\] of pure gold as it is given that $24$ carat gold is pure gold by putting the values and further by taking the ratio we will get the required ratio easily.
Complete step-by-step answer:
Given that $24$ carat gold is pure gold, $18$ carat gold \[3/4\] gold and \[20\] carat gold is \[5/6\] gold.
We have to find the ratio of the pure gold in $18$ carat gold to the pure gold in \[20\] carat gold.
So first we will individually calculate both of them
Now, According to question $18$ carat gold = \[3/4\] of pure gold
As pure gold = $24$ (given)
Substitute the value in above equation we have
$3/4 \times 24 = 18$
$18$ carat gold = $18$
Similarly, \[20\] carat gold = \[5/6\] of pure gold
As pure gold = $24$ (given)
Substitute the value in above equation we have
$5/6 \times 24 = 20$
\[20\] carat gold = \[20\]
Now we will find the ratio by dividing $18$ carat gold and \[20\] carat gold, so we get
$18:20 = 9:10$
Further simplifying it we have $9:10$
Hence the required ratio is $9:10$
Note- A ratio is a way to measure two quantities, using division as we measure miles and hours in miles per hour. On the other hand, a proportion is an equation which states that two ratios are equal. When one number is unknown in a proportion the number can be identified by solving the proportion.
Complete step-by-step answer:
Given that $24$ carat gold is pure gold, $18$ carat gold \[3/4\] gold and \[20\] carat gold is \[5/6\] gold.
We have to find the ratio of the pure gold in $18$ carat gold to the pure gold in \[20\] carat gold.
So first we will individually calculate both of them
Now, According to question $18$ carat gold = \[3/4\] of pure gold
As pure gold = $24$ (given)
Substitute the value in above equation we have
$3/4 \times 24 = 18$
$18$ carat gold = $18$
Similarly, \[20\] carat gold = \[5/6\] of pure gold
As pure gold = $24$ (given)
Substitute the value in above equation we have
$5/6 \times 24 = 20$
\[20\] carat gold = \[20\]
Now we will find the ratio by dividing $18$ carat gold and \[20\] carat gold, so we get
$18:20 = 9:10$
Further simplifying it we have $9:10$
Hence the required ratio is $9:10$
Note- A ratio is a way to measure two quantities, using division as we measure miles and hours in miles per hour. On the other hand, a proportion is an equation which states that two ratios are equal. When one number is unknown in a proportion the number can be identified by solving the proportion.
Recently Updated Pages
Class 8 Question and Answer - Your Ultimate Solutions Guide
Master Class 8 Social Science: Engaging Questions & Answers for Success
Master Class 8 Maths: Engaging Questions & Answers for Success
Master Class 8 English: Engaging Questions & Answers for Success
Master Class 8 Science: Engaging Questions & Answers for Success
One difference between a Formal Letter and an informal class null english null
Trending doubts
When people say No pun intended what does that mea class 8 english CBSE
How many ounces are in 500 mL class 8 maths CBSE
Which king started the organization of the Kumbh fair class 8 social science CBSE
Chandbardai was a state poet in the court of which class 8 social science CBSE
Advantages and disadvantages of science
What is BLO What is the full form of BLO class 8 social science CBSE