Answer to Question #103596 in Algebra for Tina

Question

The average mass of 120 goats is 12.5kg.if two goats are added, the average mass is 12.6kg.what is the mass of the extra goats.

Answer 1

$\frac{120*12.5+x}{120+2}=12.6$

$x=12.6(120+2)-120*12.5=37.2$

The mass of two extra goats is 37.2 kg.