RobertPuller03 RobertPuller03

24-11-2017
Mathematics

contestada

lois is four times as her son dan . the sum of their ages is 40 how old is dan

Respuesta :

s066209 s066209

24-11-2017

l=4d
l+d=40
4d+d=40
5d=40
d=8 years old

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