Question

The density of 400cm of palm oil was 0.9gcm-3 before frying. If the density of the oil was 0.6gm-3 after frying, assuming no loss of oil due to spilling, its new volume was?

Answer 1

The mass is constant:

$$m=m'\to \rho V=\rho'V'$$

$$(400)(0.9)=0.6V'$$

$$V=600\ cm^3$$