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Lada Lada
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6 years ago
If 35 digging machines dig 805 cubic metres of earth in 5 hours, how much earth will 30 digging machine dig in 6 hours?
Textbook 
Contemporary Business Mathematics with Canadian Applications

Contemporary Business Mathematics with Canadian Applications


Edition: 11th
Authors:
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wrote...
6 years ago
Number of digging machines is directly proportional to amount of earth dug.
Time is also directly proportional to the amount of earth dug.
∴   =   × 
⇒ x = 828
30 digging machines will dig 828 cubic metres of earth in 6 hours.
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