MATH

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Out of 1200 pupils in a school, 900 are boys and the rest are girls. If 20% of the boys and 30% of the girls wear spectacles,find:
a.how many pupils in wear spectacles
b.what percent of the total number of pupils wear spectacles.

  • MATH -

    (a) .20*900 + .30*300
    (b) divide that by 1200

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