The average height of five pupils is 128 cm. If the average height of four pupils is 121 cm, find the height of the fifth pupil.
|
5 pupils |
4 pupils |
Number |
5 |
4 |
Value |
128 |
121 |
Total value |
640 |
484 |
Total height of the 5 pupils
= 5 x 128
= 640 cm
Total height of the 4 pupils
= 4 x 121
= 484 cm
Height of the fifth pupil
= 640 - 484
= 156 cm
Answer(s): 156 cm