The average mass of box A, box B and Box C is 810 g. The total mass of box A and box C is 2 kg and 70 g. What is the mass of box B?

Answer 1

Let's denote the mass of box A as A, the mass of box B as B, and the mass of box C as C.

From the given information, we have the following equations:

1. A + B + C = 810 g (average mass)
2. A + C = 2070 g (total mass of box A and box C)

Substitute the value of A + C from equation 2 into equation 1:

B + 2070 = 810
B = 810 - 2070
B = -1260

Since mass cannot be negative, there seems to be an error in the given information or calculations. Let's re-examine the data.