Question

3 boxes have average weigh. when o e box which weights 88 kg is replaced by another box, the average weight is increased by5 kg. how much the new box weights​

Answer 1

Step-by-step explanation:

(X+Y+88)/3=A

X+Y+88=3A

X+Y=3A-88

(X+Y+Z)/3=A+5

X+Y+Z=3A+15

3A-88+Z=3A+15

Z-88=15

Z=103