Billie9166
15.11.2019 •
Mathematics
An electrician can wire on 4.5 houses in a week. how many months will it take her to wire 55 houses if she wires the same number each week and figures on 4.5 weeks per month
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Ответ:
Ответ:
8 3 / 10 = 83 / 10;
But, 31 / 5 = 62 / 10 ;
62 / 10 - ( - 83 / 10 ) = 62 / 10 + 83 / 10 = 145 / 10 = 29 / 2 .