Question

Using a scale, Jamal found the mass of a rock to be 3000 grams. Kemen used a different scale and recorded a different mass for the same rock. The percent error for Kemen's measurement was 5%. Which measurement could be the mass that Kemen recorded? A) 15000 g B) 2850 g C) 600 g D) 150 g.

Answer 1

It's answer B) 2850 because
3000:100x5=150           3000-150=2850