Explanation:
it is important to understand the meaning of the syllables in the terms :
kilo means 1000
milli means 1/1000
so, 1 kg means 1000 g (grams).
1 mg means 1/1000 g.
therefore,
85,000 mg = 85 g = 0.085 kg
0.15 kg = 150 g = 150,000 mg
so, it is clear that the peach has the greater mass.