Martin is a coin collector. He has 50 coins in his collection.
How many coins in Martin’s collection are from South America?
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1 point
1/2 coins are from the United States.
2/5 of the coins are from Europe.
The remaining coins are from South America.
A. 10 coins
B. 5 coins
C. 20 coins
D. 15 coins
To find the number of coins in Martin's collection that are from South America, we first need to determine the proportion of coins that are from South America. We are given that 1/2 of the coins are from the United States and 2/5 of the coins are from Europe.
The proportion of coins that are from the United States is 1/2 and the proportion of coins that are from Europe is 2/5. Adding these two proportions together gives us 1/2 + 2/5 = 5/10 + 4/10 = 9/10.
This means that 9/10 of the coins in Martin's collection are either from the United States or Europe. Therefore, the remaining 1/10 of the coins must be from South America.
To find the number of coins from South America, we multiply 1/10 by the total number of coins in Martin's collection: 1/10 * 50 = 5.
Therefore, there are 5 coins in Martin's collection that are from South America.
Therefore, the answer is B. 5 coins.