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An object weighs m1 in a liquid of dens...

An object weighs `m_1 ` in a liquid of density `d_1 and ` that in liquid of density `d_2 " is " m_2` . The density d of the object is

A

` d= ( m_2d_2- m_1d_1)/( m_2-m_1) `

B

` d= ( m_1d_1-m_2d_2)/( m_2-m_1) `

C

` d= (m_2d_1-m_1d_2)/( m_1-m_2) `

D

` d= (m_1d_2-m_2d_1)/( m_1-m_2) `

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