Question 452385
Add their rates of typing
Frank's rate:
( 1 report) / ( 2 hrs )
James' rate:
( 1 report ) / ( 5 hrs )
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{{{ 1/2 + 1/5 =  1/x }}}
Multiply both sides by {{{10x}}}
{{{ 5x + 2x = 10 }}}
{{{7x = 10 }}}
{{{ x = 1.43 }}}
It will take them 1.43 hrs