2 laborers can polish 1/3 part of a door in a day. Find how many labourers are needed to polish to polish 2/3 part of the door in 2 days.
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Step-by-step explanation:
2 labourers
1/3 in 1 day needs 2 labourers
2/3 in 1 day needs 2*2labourers
2/3 in 2 days needs 2*2/2= 2 labourers
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