The average height of six pupils is 130 cm. If the average height of five pupils is 140 cm, find the height of the sixth pupil.
|
6 pupils |
5 pupils |
Number |
6 |
5 |
Value |
130 |
140 |
Total value |
780 |
700 |
Total height of the 6 pupils
= 6 x 130
= 780 cm
Total height of the 5 pupils
= 5 x 140
= 700 cm
Height of the sixth pupil
= 780 - 700
= 80 cm
Answer(s): 80 cm