Question

Mark builds a lego house $3\frac{1}{4}$ feet high. He then puts a chimney on the roof which is $\frac{1}{8}$ feet tall. What is the height of the lego house including the chimney?

• A. $3\frac{3}{8}ft$
• B. $5\frac{3}{8}ft$
• C. $4\frac{1}{2}ft$
• D. $2\frac{1}{3}ft$

Answer 1

The correct option is A $3\frac{3}{8}ft$

Height of the lego house without the chimney $=3\frac{1}{4}ft$
Height of the chimney $=\frac{1}{8}ft$
So, height of the lego house including the chimney $=(3\frac{1}{4}+\frac{1}{8})=\frac{13}{4}+\frac{1}{8}=\frac{13\times 2+1}{8}=\frac{27}{8}=3\frac{3}{8}ft$