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8) Jennifer has a collection of 1,600 coins. Of the coins, 40% are dated
before 1940, 35% are dated from 1940 to 1980, and the rest are dated
after 1980. How many coins in Jennifer's collection are dated after 1980?


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8 Jennifer has a collection of 1600 coins Of the coins 40 are dated before 1940 35 are dated from 1940 to 1980 and the rest are dated after 1980 How many coins class=

Respuesta :

Answer:  400  (choice A)

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Explanation:

40% + 35% = 75% of the coins were either made before 1940, or made from 1940 to 1980. In other words, 75% of the coins were minted before 1980. This leaves 100% - 75% = 25% of the coins to being minted after 1980.

25% of 1600 = 0.25*1600 = 400 coins were made after 1980

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