Bunuel wrote:
There are 8 fields of exactly the same size that are to be plowed by 7 farmers who work at identical rates. If it takes 5 hours for 4 of the farmers to plow the first 2 fields, how many hours will it take the remaining 3 farmers to plow the remaining 6 fields?
A. 18
B. 19
C. 20
D. 21
E. 22
It took 5 hours for 4 of the farmers to plow the first 2 fields.
Let x be the number of hours for the remaining 3 farmers to plow the remaining 6 fields.
Equating rates,
\(\frac{5*4}{2}=\frac{3*x}{6}\)
Solve for x,
x=20
IMO, Option C
_________________
Kudos encourage discussions. Share it to amplify collective education!