The common difference of the AP 500, 1500 , 2500 , 3500 is _______.
1200
1000
1500
500
Given below is the distribution of total household expenditure of 200 manual workers in a city. Expenditure (in Rs.) No. of manual workers1000−1500241500−2000402000−2500312500−3000283000−3500323500−4000234000−4500174500−50005 Find the expenditure done by maximum number of manual workers.