The average height of four pupils is 127 cm. If the average height of three pupils is 131 cm, find the height of the fourth pupil.
|
4 pupils |
3 pupils |
Number |
4 |
3 |
Value |
127 |
131 |
Total value |
508 |
393 |
Total height of the 4 pupils
= 4 x 127
= 508 cm
Total height of the 3 pupils
= 3 x 131
= 393 cm
Height of the fourth pupil
= 508 - 393
= 115 cm
Answer(s): 115 cm