A carpenter built three bookcases, A, B and C, to stand next to each other along a wall. The total length of the wall is 456 centimeters. The carpenter will build two more bookcases, D and E, along the same wall. These two book cases will have equal widths. The widths of bookcases A, B and C are A 132 cm, B 94 cm, C 108 cm. What is the width of D and E?

Question

Mathematics

Simon Hinton

10 September, 18:33

A carpenter built three bookcases, A, B and C, to stand next to each other along a wall. The total length of the wall is 456 centimeters. The carpenter will build two more bookcases, D and E, along the same wall. These two book cases will have equal widths. The widths of bookcases A, B and C are A 132 cm, B 94 cm, C 108 cm. What is the width of D and E?

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Ahmed Moore · Answer 1

Start with the 456 cm that is the length of the wall. Subtract the 3 bookcase lengths that are given (132, 94, and 108). That will leave you with the remaining wall space. Divide that answer by 2, and that will tell you the widths of E and D, because they have equal widths.