Q235
Two workers one driller and one helper can drill . . . . . . . . number of holes of . . . . . . . . deep.
A.
40 - 50 and 1.5 m
AnswerB.
50 - 60 and 1.2 m
C.
30 - 40 and 1.8 m
D.
60 and 1.2 m
Answer: Option A
Solution
Answer: Option A
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