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Minchanka [31]
3 years ago
8

a coin contains 9 grams of nickel and 16 grams of copper for total weight of 25 G what percentage of the total metal is in the c

opper
Mathematics
1 answer:
4vir4ik [10]3 years ago
4 0
64%

16g of copper / 25g total weight = .64g of copper
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Answer:

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Step-by-step explanation:

The number who drink coffee is 3/4 of 8000, so ...

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Of those, 1/5 add cream, so the number of coffee drinkers who add cream to their coffee is ...

... (1/5)×6000 = 1200.

_____

<em>Alternate solutions</em>

We have computed ...

... (1/5)×((3/4)×8000) = 1200

Since multiplication is associative, you can multiply the fractions first, if you wish:

... ((1/5)×(3/4))×8000 = (3/20)×8000

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or

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