Bantuin dong No 1-3 Please

1. A:B = 7:10 | A = 49
B = 10/7 × 49 = 70
70 + 49 = 119 kelereng
2. Kecepatan = Jarak : Waktu = 120 km : 3 jam =
40 km/jam
3. 1 2/5 = 140% | 75% | 1,5 = 15/10 = 150%
140% × 75% : 150% = 1050% : 150% = 7%