Four numbers

The first number is 50% second, the second number is 40% third, the third number is 20% of the fourth. The sum is 396. What are the numbers?

Result

a =  12
b =  24
c =  60
d =  300

Solution:

Solution in text a =
Solution in text b =
Solution in text c =
Solution in text d =







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To solve this example are needed these knowledge from mathematics:

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