 
 <prompt> Idan 60% dake jami'in makaranta suna mata da mace da kuma lambar yara yana 300, me yasa yara suna makaranta? <response>: Yara sun hada da 100% - 60% = 40% daga cikin jama'a dukkan.
Jama'a dukkan a makaranta shine 300 / (40/100) = <<300/(40/100)=750>>750 jama'a.
Sannan 60% daga cikin jama'a suna mata, saboda haka akwai (60/100) * 750 = 450 yara mata.

Javaba na farko: 450. 