The average height of eight students is 130 cm. If the average height of seven students is 140 cm, find the height of the eighth student.
|
8 students |
7 students |
Number |
8 |
7 |
Value |
130 |
140 |
Total value |
1040 |
980 |
Total height of the 8 students
= 8 x 130
= 1040 cm
Total height of the 7 students
= 7 x 140
= 980 cm
Height of the eighth student
= 1040 - 980
= 60 cm
Answer(s): 60 cm