The average height of seven pupils is 128 cm. If the average height of six pupils is 134 cm, find the height of the seventh pupil.
|
7 pupils |
6 pupils |
Number |
7 |
6 |
Value |
128 |
134 |
Total value |
896 |
804 |
Total height of the 7 pupils
= 7 x 128
= 896 cm
Total height of the 6 pupils
= 6 x 134
= 804 cm
Height of the seventh pupil
= 896 - 804
= 92 cm
Answer(s): 92 cm