In a rare coin collection, there is one gold coin for every three non-gold coins. 10 more gold coins are added to the collection and the ratio of gold coins to non-gold coins would be 1:2. Based on the information, the total number of coins in the collection now becomes
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सही उत्तर: (A) 90
Let initial gold coins = x. Then non-gold = 3x. After adding 10 gold coins: (x+10)/(3x) = 1/2. Solving: x = 20. Total coins after = 30 gold + 60 non-gold = 90.
In English (Question & Model Answer)
In a rare coin collection, there is one gold coin for every three non-gold coins. 10 more gold coins are added to the collection and the ratio of gold coins to non-gold coins would be 1:2. Based on the information, the total number of coins in the collection now becomes
Correct Option: (A) 90
Let initial gold coins = x. Then non-gold = 3x. After adding 10 gold coins: (x+10)/(3x) = 1/2. Solving: x = 20. Total coins after = 30 gold + 60 non-gold = 90.