tolong jawab ya!!!!!!!!

2. 75+62+73 = 210 ton
rata rata = 210 ton/12 bulan
= 17.5 ton - b

3. (10x8) + (11x6) + (12x7) + (13x6) + (14x8) = 80 + 66 + 84 + 78 + 112 = 420
rata rata = 420/35
= 12 tahun - c

maaf kalo salah semoga membantu ya:)