tolong di jawab pake caranya no 31,33

31. Kpk = 4 dan 6
4 = 2 x 2
6 = 2 x 3
Kpk = 2x2x3=12 hari + 24 maret 2017
36 maret - 31 = 5 April 2017

33. Waktu = 12.00-07.45-15menit = 05.00 tepat
Kecepatan = 80km/jam

Jarak = Kecepatan x Waktu
= 80 x 5 =400 km.