¼h+½h=60 Ile wynosi H

¼h+½h=60 1/4h+2/4h=60 3/4h=60/:3/4 h=80

¼h+½h=60 ¾h=60 |:(¾) h=80

1/4h + 1/2h=60 1/4h + 2/4h=60 3/4h=60 / : 3/4 h=80