Question 1128820
Let {{{ n }}} = number of balloons they
can blow up and tie together
Add their rates of working to get
their rate working together
{{{ 1/( 5 + 3 ) + 1/( 6 + 4 ) = n/( 14*60 ) }}}
The units are: [ balloons made ] / [ seconds to makes them ]
{{{ 1/8 + 1/10 = n/840 }}}
Multiply both sides by {{{ 840 }}}
{{{ 105 + 84 = n }}}
{{{ n = 189 }}}
and
{{{ 189/3  = 63 }}}
There are 63 balloons in each bag