Question

If 99 people have a mean income of Birr 400, how much is the mean income increased by the addition of a
woman with an income of Birr 1500? A. Birr 412 B. Birr 410 C. Birr 411 D.Birr413

Answer 1

$The\; mean =\frac{99\times 400 +1500}{100}=411\\ Answer\;is\;C$