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A block of density rho(1) floats in two ...

A block of density `rho_(1)` floats in two immiscible liquids of density `4 rho` and `2 rho` , such that `(1/4)^(th)` portion is in liquid of density `4 rho` and remaining liquid of density `2 rho` ,then `rho_(1)`=_________`g/(cm)^3`(Given `rho=0.8g/(cm)^3`)

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