The average height of four pupils is 120 cm. If the average height of three pupils is 132 cm, find the height of the fourth pupil.
|
4 pupils |
3 pupils |
Number |
4 |
3 |
Value |
120 |
132 |
Total value |
480 |
396 |
Total height of the 4 pupils
= 4 x 120
= 480 cm
Total height of the 3 pupils
= 3 x 132
= 396 cm
Height of the fourth pupil
= 480 - 396
= 84 cm
Answer(s): 84 cm