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     EduGorilla 
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    A task was set to deliver building material from a railway station to a construction site in 8 hours. The material had to be delivered with 30 three-ton trucks. These trucks worked for two hours and then 9 five-ton trucks were added to help out. The task was completed on time. If the five-ton trucks had begun the operation, and the three-ton trucks had been brought two hours later, then only 13/15 of the material would have been delivered in the allotted time. Determine how many hours it would take
    (i) one three-ton truck alone to deliver all the material?
    (ii) one five-ton truck alone to deliver all the material?

    Options :-

    1. 300 hours and 270 hours
    2. 270 hours and 300 hours
    3. 330 hours and 300 hours
    4. 280 hours and 240 hours
    5. None of these
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