Question

I didn't really understand the explanation, can it be broken down

Answer 1

Answer:

40.06

Explanation:

(23 * 39) + (48 * 40) + (29 * 41)

                   100

= 40.06

formula:

(% of isotope A * mass of A) + (% of isotope B * mass of B) ......

                                        100

                                                                                                               

Answer 2

Answer:

yes it can be broken down