Answer=0.87g/mL
Density=mass/volume
Density=43.5g/50mL
Density=0.87g/mL
Step-by-step explanation:

Thank you for your question!
Your really close!
Just set this up as an algebraic equation:
4x - 10 = 30
4x = 40
x = 10
Hope this helped!
<span>The Greatest Common Factor (GCF) is: 3</span>