Dexter spent 1 2/3 hours working on his history homework and another 2 1/5 hours working on his math homework.
How many hours did Dexter spend working on the two homework?

Correct answer:

t =  3 1315 = 58/15 h

Step-by-step explanation:

t1=132=1+32=31 3+2=33+2=351.6667 h t2=251=2+51=52 5+1=510+1=511=2.2 h  t=t1+t2=35+511=1525+1533=1525+33=1558=1558 h=31513 h=3.8667 h

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