A box contains coins and jewels of either gold or silver. If 30% of the objects in the box are coins and 40% of jewels are silver, what percentage of objects in the box are gold jewels?
Answers
Answer:
Let the number of coin + Ring in box is 100
Then by given conditions
No. of coin =60
No. of Ring=100-60=40
No . of Ring of gold =
100
40×40
=16
No. of Coins of silver =
100
30×60
=18
No. of Coins of gold=60-18=42
No.of (coins+Rings ) of gold=16+42=58
Hence % of gold articals=58 %
Step-by-step explanation:
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Given:
Percentage of coins in the box = 30%
Percentage silver jewels out of the total jewels = 40%
To find:
The percentage of gold jewels in the box.
Solution:
Let the total number of objects in the box = x
The percentage of jewels in the box = 100% - 30% = 70%
Number of jewels = (70*x) / 100 = 0.7x
Number of silver jewels = 40% of 0.7x
= (40*0.7x) / 100 = 0.28x
Number of gold jewels = 0.7x - 0.28x = 0.42x
Percentage of gold jewels in the box = (0.42x / x) *100 = 42%
The percentage of objects that are gold jewels = 42%.