mean/average problem?? (1 Viewer)

[B737NGX]

Can someone help me out with this problem please!!!


Five sumo wrestlers have a mean mass of 210 kg. One wrestler, with a mass of 220 kg, retires and is replaced by another whose mass is 180 kg. What is the new mean mass of the five?

 

[dangerouss]

Total mass = 210 x 5 = 1050kg
Total mass - retired wrestler = 1050 - 220(retired wrestler) = total mass of 4 remaining wrestlers = 830kg
New total mass = 830 + 180(new wrestler) = 1010kg.

Therefore, new mean mass = 1010kg/5 = 202kg

 

[B737NGX]

thanks heaps Mr dangerouss!

 

[dangerouss]

You are very welcome