Answer A - 8,1in
explanation
------------------------------------------------------------------------
! Inches ! Inches ! Pounds ! Pounds !
! 9 : 10 ! Sum ! ! sum !
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! 0,9 ! 0,9*1 = 09 ! 10 ! 1*10 = 10 !
------------------------------------------------------------------------\
! 0,9 ! 0.9*2 = 1,8 ! 10 ! 2*10 = 2 0 !
! 0,9 ! ! 10 ! !
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! 0,9 ! 0,9*3 = 2,7 ! 10 ! !
! 0,9 ! ! 10 ! 3*10 = 30 !
! 0,9 ! ! 10 ! !
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<span>for every pound falls 0.9 inches
</span><span>derived unit of proportion :
</span><span>
</span>
explanation
------------------------------------------------------------------------
! Inches ! Inches ! Pounds ! Pounds !
! 9 : 10 ! Sum ! ! sum !
-------------------------------------------------------------------------
! 0,9 ! 0,9*1 = 09 ! 10 ! 1*10 = 10 !
------------------------------------------------------------------------\
! 0,9 ! 0.9*2 = 1,8 ! 10 ! 2*10 = 2 0 !
! 0,9 ! ! 10 ! !
-----------------------------------------------------------------------
! 0,9 ! 0,9*3 = 2,7 ! 10 ! !
! 0,9 ! ! 10 ! 3*10 = 30 !
! 0,9 ! ! 10 ! !
-------------------------------------------------------------------------
<span>for every pound falls 0.9 inches
</span><span>derived unit of proportion :
</span><span>