 
<translate> Tun da matsakaicin farashin fensir = 2 <unk> Farashin fensir 75 = 150 <unk> Farashin alkalami 30 = (630 <unk> 150) = 480 <unk> Matsakaicin farashin alkalami = 480⁄60 = 16 Amsar ƙarshe: (E). <eng> Since average price of a pencil = 2
∴ Price of 75 pencils = 150
∴ Price of 30 pens = (630 – 150) = 480
∴ Average price of a pen = 480⁄60 = 16 The final answer: (E). 