Max spends three times as long on his math homework than he does on his science homework. if he spent a total of 64 minutes on math and science homework last night, how long did he spend on math homework
Let m=math and s=science
m=3s
m+s=64
So using substitution,
3s+s=64
4s=64
s=16
So m=64-16=48 minutes
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