2.
If 15 men, working 9 hours a day, can reap a field in 16 days, in how many
days
will 18 men reap the field, working 8 hours a day?
Answer:
Let the required number of days be x.
More
men, Less days (indirect proportion)
Less
hours per day, More days (indirect proportion)
Men
18 : 15
Hours
per day 8: 9 } : :16 : x
(18
x 8 x x)=(15 x 9 x 16) x=(44 x 15)144 = 15
Hence,
required number of days = 15.
