Question 959926
Think of this as one plane standing still and
the other traveling at the sum of their speeds
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Let {{{ s }}} = the speed of the slower plane in mi/hr
{{{ s + 95 }}} = the speed of the faster plane in mi/hr
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{{{ 3225 = ( s + s + 95 )*5 }}}
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{{{ 3225 = 5*2s + 475 }}}
{{{ 10s = 2750 }}}
{{{ s = 275 }}}
and
{{{ s + 95 = 370 }}}
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The speed of the slower plane is 275 mi/hr
The speed of the faster plane is 370  mi/hr
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check:
{{{ d[1] = 275*5 }}}
{{{ d[1] = 1375 }}} mi
and
{{{ d[2] = 370*5 }}}
{{{ d[2] = 1850 }}}
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{{{ d[1] + d[2] = 1375 + 1850 }}}
{{{ d[1] + d[2] = 3225 }}}
OK