If 200ml is divided into 4 equal parts, it will be 50ml.
(i) 12 is nothing but 24.
So, 2 parts out of 4 will be 50ml + 50ml = 100ml.
∴ 12 of 200ml = 100ml.
(ii) 1 part out of 4 will be 50ml.
∴ 14 of 200ml = 50ml.
(iii) 3 parts out of 4 will be 50ml + 50ml + 50 ml = 150ml.
∴ 34 of 200ml = 150ml.