Question 1041766
Let {{{ I[m] }}} = the income of the man
Let {{{ I[w] }}} = the income of the wife
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For man:
{{{ I[m] / 4000 = 5/3 }}}
{{{ 3I[m] = 5*4000 }}}
{{{ I[m] = 20000/3 }}}
{{{ I[m] = 6,666. 67 }}}
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For wife:
{{{ I[w] / 4000 = 3/1 }}}
{{{ I[w] =3*4000 }}}
{{{ I[w] = 12000 }}}