JAMB - Physics (1984 - No. 3)

What volume of alcohol with a density of 8.4 x 102kgm-3 will have the same mass as 4.2m3of petrol whose density is 7.2 x 102kgm-3?
14m3
3.6m3
4.9m3
5.0m3
5.8m3

Explanation

Mass = Density x Volume

4.2 x 7.2 x 102 = v x 8.4 x 102

= 3.6m3

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