A company found that an experienced surveyor can survey a roadbed in 6 hours. An apprentice surveyor needs 10 hours to survey the same stretch of road. If the two work together, find how long it takes them to complete the job.

Step-by-step explanation:

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3 3/4 hours

Step-by-step explanation:Let t = the time it would take both surveyors working together

time together + time together = 1

  time alone         time alone

t  +  t  = 1       Multiply both sides of the equation by 60.

6    10

10t + 6t = 60

16t = 60

t = 3 3/4 hours

they charge the same amount at 20 minutes.

step-by-step explanation: