A measuring cylinder contains $30c{m^3}$ of a liquid.
Some more of the liquid is added until the liquid level reaches the $50c{m^3}$ mark.
The reading on the balance increases by 30 g.
What is the density of the liquid?

1 )
$0.60g/c{m^3}$
2 )
$0.67g/c{m^3}$
$1.5g/c{m^3}$
4 )
$1.7g/c{m^3}$
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