Hello,
<span>Density = Mass/Volume
9 = 1800/volume
9volume = 1800
volume = 200 cm^3</span><span>
</span>
The answers is 200 cm^3
Hope that helped :)
C = 1.6b
c + b = 442
1.6b + b = 442
2.6b = 442
b = 442 / 2.6
b = 170 <== Boston
c = 1.6b
c = 1.6(170)
c = 272 <== Colorado Springs