Question

If a family of 7 persons can live on 8400₹ for 36 days, how long can a family of 9 persons live on ₹8100?

Answer 1

7×8400×36=9×8100×y
7×84×4/81=y
y=29.01

Answer 2

Answer:

135 days

Step-by-step explanation:

total work will be

• 30*27

but the work gets 3 times greater

• so, 30*27*3

the total work has to be done by 18 men

• so, (30*27*3)/18

which is 135