contestada

One delivery driver can complete a route in 7 h another can do the same route in 11 hours. What equation can the drivers use to determine time T in hours needed to complete the route when they work together?

Respuesta :

AL2006

The equation they can use is

1/T = 1/7 + 1/11

The solution is

T = 4 hours 16 minutes 40 seconds .

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