yang baek bantu ka pake caranya :(

RAIHAN
kec = 5,75 km/jam
waktu = 48 menit

kec = jarak/waktu
5,75 = X : 48/60
5,75 = X : 12/15
5,75 = X x 15/12
5,75 = 15/12X
X = 5,75 : 15/12
X = 5,75 x 12/15
X = 4,6 km

INTAN
kec = 7,5 km/jam
waktu = 48 menit

kec = jarak/waktu
7,5 = X : 48/60
7,5 = X : 12/15
7,5 = X x 15/12
7,5 = 15/12X
X = 7,5 : 15/12
X = 7,5 x 12/15
X = 6 km

jarak keseluruhan
= 4,6 km + 6 km
= 10,6 km