Benny is 12 years old. he is currently 200% of his sisters age. what percent of benny's age will his sisters age be in 4 years?

If Benny is 12 right now, that means that he is twice his sisters age because he is 200% of or 2 times his sister's age. His sister right now is 6 years old then. 
After 4 years, Benny will be 16 (add 4 to 12) and his sister will be 10. 
To find the percentage,divide his age by his sister's age and make it a percentage.
16/10=1.6=160%
Hope this helps.

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