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NNADVOKAT [17]
3 years ago
9

11

Mathematics
1 answer:
IgorLugansk [536]3 years ago
4 0

a. 60(h)+40=

b 60(3)+40=

180+40=$220

c. 400=60(h)+40=

  360=60(h) *divide 60 on each side*

   6=h, 6 hours

 

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