 
<translate> 2 / 3 na tsuntsaye kaji ne saboda 1 - (1 / 3) = 2 / 3. Yana da kaji 10 domin 15 x (2/3) = 10. Za a kashe $20 don ciyar da su domin 10 x 2 = 20. Amsar ita ce: 20. <eng> 2 / 3 of the birds are chickens because 1 - (1 / 3) = 2 / 3. He has 10 chickens because 15 x (2 / 3) = 10. It will cost $20 to feed them because 10 x 2 = 20. The answer: 20. 