Picture frames

Destiny has to make 24 picture frames. Each frame uses 16 3/8 wood trim. 2/3 were completed on the first day. How many inches of wood trim is needed to complete the remaining frames on the second day?

Correct result:

x =  131 inch

Solution:

a=16+38=1318=16.375 inch n=24  n2=(1−23)⋅ n=(1−23)⋅ 24=8  x=n2⋅ a=8⋅ 16.375=131 incha=16 + \dfrac{ 3 }{ 8 }=\dfrac{ 131 }{ 8 }=16.375 \ \text{inch} \ \\ n=24 \ \\ \ \\ n_{2}=(1 - \dfrac{ 2 }{ 3 } ) \cdot \ n=(1 - \dfrac{ 2 }{ 3 } ) \cdot \ 24=8 \ \\ \ \\ x=n_{2} \cdot \ a=8 \cdot \ 16.375=131 \ \text{inch}

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