The average height of five students is 123 cm. If the average height of four students is 129 cm, find the height of the fifth student.
|
5 students |
4 students |
Number |
5 |
4 |
Value |
123 |
129 |
Total value |
615 |
516 |
Total height of the 5 students
= 5 x 123
= 615 cm
Total height of the 4 students
= 4 x 129
= 516 cm
Height of the fifth student
= 615 - 516
= 99 cm
Answer(s): 99 cm