5 hm/menit + 22 dam/menit = m/detik

5 hm/menit + 22 dam/menit = ... m/detik
=> 5 hm/menit = 500/60 = 8.33 m/detik
=> 22 dam/menit = 220/60 = 3.66 m/detik
= 8.33 + 3.66 = 11.99 m/detik = 12 m/detik

maaf kalau salah