The yield of wheat from 6 hectares is 280 quintals. Find the number of hectares required for a yield of 225 quintals.

The yield of wheat from 8 hectares of land is 360 quintals. Find the number of hectares of land required for a yield of 540 quintals?

The yields of soya bean per acre for 7 years was 10,7,5,3,9,6,9 quintals. Find the mean of yields peracre.

The cotton yielded from the crop of a farmer is given below. Find the average mass of cotton yielded per week. Week 1 - 20 quintals Week 2 - 15 quintals Week 3 - 12 quintals

Adding 4 to twice a number yields (25)/(6) . Find the number.

The pitch of the screw in a screw jack shown in the figure is 5 cm and the diameter of the head of its vertical shaft is 30 cm. If the length of the rod PQ fixed to the shaft is 55 cm, find the effort required to raise a load of 10.56 quintal using the jack. (Take 1 quintal = 100 kgwt)

The yields of wheat for 50 experimental fields are given below. Find the average yield and hence find its variance.

If 5 tractors can plough 5 hectares of land in 5 days, then what is the number of tractors required to plough 100 hectares in 50 days ?