270menits +14400detik= berapa jam

= ( 270 ÷ 60 ) + ( 14.400 ÷ 3600 )
= 4 jam 30 menit + 4 jam
= 4 jam + 4 jam + 30 menit
= 8 jam 30 menit atau 8 1/2 jam

270menit=4.5jam
14400detik=4jam
=4.5jam+4jam
=8.5jam