Question 1093222
Let {{{ a }}} = number of kw-hrs for low range of monthly bills
Let {{{ b }}} = number of kw-hrs for high range of monthly bills
------------------------------
{{{ 9.44a + 12.55 = 76.27 }}}
{{{ 9.44a = 63.72 }}}
{{{ a = 6.75 }}}
and
{{{ 9.44b + 12.55 = 248.55 }}}
{{{ 9.44b = 236 }}}
The range of usage is:
6.75 kw to 236 kw