Arithmetic Questions And Answers :: Chain Rule: part4

6.On a scale of a map 0.8 cm. represents 8.8 km. If the distance between two points on the map is 80.5 cm., the distance between these points is approximately :

7.A garrison had provisions for a certain number of days. After 10 days (1/5)th of the men desert and it is found that the provisions will now last just as long as before. How long was that :

8.If 27 kg. of corn would feed 42 horses for 21 days, in how many days would 36 kg. of it feed 21 horses ?

9.If 20 men working 7 hours a day can do a piece of work in 10 days, in how many days will 15 men working for 8 hours a day do the same piece of work ?

10.If the rent for grazing 40 cows for 20 days is Rs. 370, how many cows can graze for 30 days on Rs. 111 ?