John must mount a box which is 10 fraction numerator 3 over denominator 6 end fraction inches wide. He wants to leave 7 fraction numerator 1 over denominator 2 end fraction inches on each side of the box. How many inches across will John need?

Answer 1

To determine how many inches across John will need, we first find the total width of the box by adding the width on each side:
7 1/2 + 10 3/6 = 7 1/2 + 5/2 = 8/2 + 15/2 = 23/2 = <<23/2=11.5>>11.5 inches. Answer: \boxed{11.5}.