redthangracing
18.12.2019 •
Mathematics
Mary's sink was clogged, so she called a plumber. the plumber charges a service fee of $50 as well as $25 for each hour he worked. if mary paid $135.50, write an equation to find the number of hours, h, that the plumber worked.
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Ответ:
The plumber worked 3.42 hours
Step-by-step explanation:
25h+50=135.50 (minus 50 to both sides)
25h=85.50 (divide 25 to both sides)
h=3.42
Check:
25(3.42)+50=135.50
85.50+50=135.50
135.50=135.50
Ответ:
He is correct, option 1
Step-by-step explanation: