Question

Average of height of three friends is 120 cm. If one more friend with height 96 cm entered the group, what will be the new average?

Pls show the step by step calculation

Answer 1

Answer:

114cm

Step-by-step explanation:

x+y+z/3=120

x+y+z=360

now,

x+y+z+96/4

360+96/4

456/4

114