The average height of eight students is 121 cm. If the average height of seven students is 115 cm, find the height of the eighth student.
|
8 students |
7 students |
Number |
8 |
7 |
Value |
121 |
115 |
Total value |
968 |
805 |
Total height of the 8 students
= 8 x 121
= 968 cm
Total height of the 7 students
= 7 x 115
= 805 cm
Height of the eighth student
= 968 - 805
= 163 cm
Answer(s): 163 cm