Question 1037950
You can think of this as one of them ( either one )
standing still and the other moving at the sum of their speeds
Let {{{ t }}} = time in hrs for helicopter to reach trawler
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{{{ 600 = ( 30 + 300 )*t }}}
{{{ 600 = 330t }}}
{{{ t = 1.8181 }}} hrs
{{{ .8181*60 = 49.0909 }}}
{{{ .0909*60 = 5.45 }}}
It takes the helicopter 1 hr 49 min 5 sec
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check:
Equation for the trawler:
{{{ d[1] = 30*1.8182 }}}
{{{ d[1] = 54.546 }}}
and
Equation for the helicopter:
{{{ d[2] = 300*1.8182 }}}
{{{ d[2] = 545.454 }}}
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{{{ d[1] + d[2] = 54.546 + 545.454 }}}
{{{ d[1] + d[2] = 600 }}}
OK