Question 353279
Rate*Time=Distance
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{{{R[1]*t=D[1]}}}
{{{R[2]*t=D[2]}}}
You also know that,
{{{t=3}}}
{{{R[2]=R[1]+20}}}
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{{{D[1]+D[2]=360}}}
Substitute for {{{D[1]}}} and {{{D[2]}}} with known value and only {{{R[1]}}} as a variable.
Then solve for {{{R[1]}}} and then go back and find {{{R[2]}}}.