Question 1093057
r, rate for one person
x, unknown time


{{{system(3r*2=50,5r*x=50)}}}


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50 bricks in both parts of the description.
{{{3r*2=5r*x}}}

{{{6=5x}}}

{{{x=6/5}}}

{{{x=1&1/5}}}------------- 1 hour 12 minutes