40m 3 of liquid is mixed with 60m 3 of another liquid Q. If the
PHYSICS
JAMB 1990
40m3 of liquid is mixed with 60m3 of another liquid Q. If the density of P and Q are 1.00kgm-3 and 1.6kgm-3 respectively, what is the density of the mixture?
- A. 0.05kgm-3
- B. 1.25kgm-3
- C. 1.30kgm-3
- D. 1.36kgm-3
Correct Answer: D. 1.36kgm-3
Explanation
Mp = 1 x 40 = 40kg ; mQ = 1.6 x 60 = 96kg
volume of mixture = 40 + 60 = 100m3
mass of mixture = 40 + 96 = 136kg
density of mixture = \(\frac{136}{100}\)
= 1.36kgm3
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