Daniel is three years older than twice his brother's age. Daniel is 17. Fill in the box with the expression that represents the age of Daniel's brother. Let b represent Daniel's brother's age.

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EstiBesti EstiBesti

22-02-2015
Mathematics

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Daniel is three years older than twice his brother's age. Daniel is 17. Fill in the box with the expression that represents the age of Daniel's brother. Let b represent Daniel's brother's age.

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mathlovingguy mathlovingguy · Answer 1 · 2015-02-22T14:49:40-05:00

Daniel's age is X
Daniel's brother age is Y

X = 3 + ( 2Y )

Y = ( X - 3 ) / 2

In case of Daniel is 17

then his brother's age is = ( 17 - 3 ) / 2 = 7 years