• # question_answer The heights of 7 buildings are 12 m, 13 m, 14 m, 15 m, 16 m, 17 m and 18 m. The average height of 7 buildings is? A) 16 m                B) 17 mC) 15 m                            D) 18 m

The average height of 7 buildings          $=\frac{12+13+14+15+16+17+18}{7}$           $=\frac{105}{7}=15\,\,m$