be the amount of time it takes to perform an arm routine and 
be the amount of time it takes to perform an abdominal routine. Â We see:
. Â Substituting gives 
, so 
and 
.How many minutes he does arm routine and abdominal routine
...
Mathematics, 28.01.2020 10:31 reghanhoward3
How many minutes he does arm routine and abdominal routine
Answers: 3
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