For this case we have to, by definition:
1 Kilogram is equivalent to 1000 grams
If Ali bought 3 kg of mandarin orange, we make a rule of three to determine how many grams are:
1 kg ------------> 1000 g
3 kg ------------> x
Where "x" represents the amount of grams that Ali bought.
[tex]x = \frac {3 * 1000} {1}\\x = 3000 \ grams[/tex]
If Mia bought 3250 grams of mandarin oranges, and we want to know how many grams I buy more than Ali, we subtract:
[tex]3250 \ g-3000 \ g = 250 \ g[/tex]
So, Mia bought 250 grams more mandarin orange than Ali.
Answer:
250 grams
