Andi belajar ipa selama \frac{1}{2} jam 15 menit,kemudian belajar ips selama \frac{3}{4} jam 12 menit berapa menit lamanya andi belajar?[tex] \frac{3}{4} [/tex]

1/2 jam 15 menit
= (1/2 x 60) + 15
= 30 + 15
= 45 menit

3/4 jam 12 menit
= (3/4 x 60) + 12
= 45 + 12
= 57 menit

Lama belajar
45 menit + 57 menit
= 102 menit

Belajar IPA = 1/2 jam 15 menit
                   = ( 1/2 x 60 ) + 15
                   = 30 + 15
                   = 45 menit

Belajar IPS = 3/4 jam 12 menit
                   = ( 3/4 x 60 ) + 12
                   = 45 + 12
                   = 57 menit

Lamanya Andi belajar
= 45 menit + 57 menit
= 102 menit