If there were 10 grams of iron and 20 grams

Question

of water what would the total amount be?

Answer 1

Please identify the School Subject carefully so the right teacher reads y our post. Science or Math, perhaps?

Sra

Answer 2

30 grams?

Answer 3

This is just like that riddle~ Which is heavier, A pound of leather or a pound of feathers. You just add 20+10=30....