jdjc
25.07.2019 •
Mathematics
If an experienced surveyor can survey a roadbed in 7 hours and an apprentice surveyor needs 10 hours, how long will it take them to complete the job together
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Ответ:
apprentice: 1 hour, 1/10 done
together: 1 hour, 10/70 + 7/70 = 17/70 done
Therefore...
1 / 17/70 = 4.1176 hours (70/17 hours)
Ответ:
answer:
teen hoops
Step-by-step explanation: