Question 465868
One person can load a truck in 25 minutes, a second can load it in 50 minutes,
 and a third can load it in 10 minutes.
 how long will it take the three together to load the truck?
:
Let t = time required if all three are loading
Let the completed job = 1; (a full truck)
:
Write a typical shared work equation
{{{t/25}}} + {{{t/50}}} + {{{t/10}}} = 1
multiply by 50, to clear the denominators, results:
2t + t + 5t = 50
8t = 50
t = {{{50/8}}}
t = 6.25 min working together
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