lg0844
19.01.2021 •
Mathematics
The bill for the repair of your refrigerator was $146. The cost for parts was $74. The cost for the service call and the first half hour of service was $50. The additional cost for labor was $22 per half hour. How many hours did the repair work take?
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Ответ:
146 - 74= 72
72 - 50 = 22
from the $50 is 30 mins of work
add on another 30 mins for the $22
it took 1 hr
Ответ: