The average height of five pupils is 121 cm. If the average height of four pupils is 117 cm, find the height of the fifth pupil.
|
5 pupils |
4 pupils |
Number |
5 |
4 |
Value |
121 |
117 |
Total value |
605 |
468 |
Total height of the 5 pupils
= 5 x 121
= 605 cm
Total height of the 4 pupils
= 4 x 117
= 468 cm
Height of the fifth pupil
= 605 - 468
= 137 cm
Answer(s): 137 cm