The average height of five pupils is 125 cm. If the average height of four pupils is 124 cm, find the height of the fifth pupil.
|
5 pupils |
4 pupils |
Number |
5 |
4 |
Value |
125 |
124 |
Total value |
625 |
496 |
Total height of the 5 pupils
= 5 x 125
= 625 cm
Total height of the 4 pupils
= 4 x 124
= 496 cm
Height of the fifth pupil
= 625 - 496
= 129 cm
Answer(s): 129 cm