Question 1103718
Rate x Time = Output
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{{{R[D]*(3/2)=1}}}
{{{R[D]=2/3}}}
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{{{R[P]*(7/2)=1}}}
{{{R[P]=2/7}}}
So then,
{{{(R[D]+R[P])*T=1}}}
{{{(2/3+2/7)*T=1}}}
{{{(14/21+6/21)*T=1}}}
{{{(20/21)*T=1}}}
{{{T=21/20}}}
{{{T=1&1/20}}}
1 hr, 3 minutes.