Solution
Median:
"median= L+{h \\over f}({N \\over 2}-cf)""{N \\over 2}= {67 \\over 2}=33.5" Therefore, 20-29 is the median class
= 28.5
=Rs. 28500
Mode:
"mode = L+ {f_m - f_{m-1} \\over 2f_m- f_{m-1}-f_{m+1}}"30-39 is the modal class since it has the highest frequency
=32.27778
=Rs. 32277.78
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