if the median of the distribution given below is 28.5 find the value of f1 and f2
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cf=5,5+f1,25+f1,40+f1,40+f1+f2,45+f1+f2
n1=N/2
60/2=n1
30=n1
M=L+n1-cf/f×i
28.5=20+30-5+f1/20×10
28.5-20=25+f1/20×10
8.5×20=(25+f1)10
170=250+10f1
250-170=10f1
80/10=f1
8=f1
45+f1+f2=60
45+8+f2=60
53+f2=60
f2=60-53
f2=7
f1=8,f2=7
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