Two diggers
Two diggers should dig a ditch. If each of them worked one-third of the time the other digger needed, they'd dig up a 13/18 ditch together. Find the ratio of the performance of these two diggers.
Correct answer:
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You need to know the following knowledge to solve this word math problem:
- algebra
- equation
- system of equations
- expression of a variable from the formula
- basic functions
- ratio
- inverse proportion
- numbers
- fractions
Units of physical quantities:
Themes, topics:
Grade of the word problem:
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