the mean monthly salary of 12 teacher in a school is rupees 15000. Teacher retire from the school who get rupees 25000 per month what will be the mean monthly salary now?
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monthly salary of 12 teachers=12*15000
=180000
if a teacher retires=180000-25000
=155000
new mean=155000/11
=14,090.9091
=180000
if a teacher retires=180000-25000
=155000
new mean=155000/11
=14,090.9091
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