Please help me on this problem

49/100

Step-by-step explanation:

First, add all of the rings bought:

640- Platinum

380- Silver

980- Gold

640+380+980= 2000

You have 2000 rings bought in total.

Second, make a fraction (gold rings bought over total rings).

980/2000

Third, simplify:

49/100

That's your final answer.

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