Bantu please nomer 1,2,3 dikumpul nanti pakai caranya ya

Bantu please nomer 1,2,3 dikumpul nanti pakai caranya ya

Jawaban:

$1. : frac{25}{40} = frac{60}{x+60} \ x +60 = frac{60 times 40}{25} x = 96-60x = 36 : orang \ \ 2. : 42km : = 42 times 100000 = 4200000m \ \ frac{1}{300000} = frac{x}{4200000} \ x = frac{4200000}{300000} = 14 \ \ 3. : frac{25}{25 + 5} = frac{30}{x} \ x = frac{25 times 30}{30} = 25$