The average height of eight pupils is 124 cm. If the average height of seven pupils is 118 cm, find the height of the eighth pupil.
|
8 pupils |
7 pupils |
Number |
8 |
7 |
Value |
124 |
118 |
Total value |
992 |
826 |
Total height of the 8 pupils
= 8 x 124
= 992 cm
Total height of the 7 pupils
= 7 x 118
= 826 cm
Height of the eighth pupil
= 992 - 826
= 166 cm
Answer(s): 166 cm