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8+g+5+15+f=50
g+f=22-(2)
(84-90)=87×8
=696
(90-96)=93×g
(96-102)=99×15
=1485
(102-108)=105×f
(108-114)=111×5
=555
Mean of frequency distribution 98.04=(555+696+1485+93g+105f)/50(frequency)
98.04×50=2736+93g+105f
2166=93g+105f-(1)
Multiply,93×(1)
93g+93f=2046-(3)
93g+105f=2166-(1)
Subtract equation three from equation one
12f=120
f=10
93g+930=2046
93g=1116
g=12
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