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If 35 laborer’s dig 805 cubic meters of earth in 5 hrs, how much of the earth will 30 laborer’s dig in 6 hours?
- 726 m3
- 828 m3
- 869 m3
- 1127 m3
Solution:
35 Laborers ⇒ 5hrs (for 805 cubic meters earth)
30 Laboureres ⇒ x
By Cross multiplication 30*5 = 35*x ⇒x=30/7 hrs
805 cubic meters ⇒ 30/7 hrs (for 30 labourers)
y cubic meters ⇒ 6hrs
805*6 = (30/7)*y
⇒ y = 805*6*(7/30)
⇒ y = 1127 cubic meters