out of 1200pupilsin school, 900are boy and the rest are girls .if 20#of the boys and 30#of the girls wear spectacles, find. how many pupils In all wear spectacles. what percent of the total number of pupils wear spectacles.
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Girls=150
Boys=450
20 percent boys=90
30 percent girls =45
Pupils=90*2+45*2=270
Therefor 270 pupil wear spectakles
Pupil percentage=270/12
22.5 percent
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HarshavardhanBS:
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You asked the question of number decreased by 40# and then again decreased by 60#
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