 
 <translate> Question: There are 50 marbles in a box which has a mixture of white, red and blue marbles. There were originally 20 white marbles and an equal number of red and blue marbles. Jack removes a number of marbles equal to double the difference between the number of white marbles and the number of blue marbles. How many marbles are left in the box? Think carefully first, then make a decision: <hau> Tambaya: Akwai marbles 50 a cikin akwati wanda ya ƙunshi cakuda fararen, ja da shuɗi marbles. Da farko akwai farin marbles 20 da kuma daidai adadin ja da shuɗi marbles. Jack yana cire adadin marbles daidai da ninki biyu na bambanci tsakanin adadin farin marbles da yawan marbles na blue. Kankara nawa suka rage a cikin akwatin? Ka yi tunani sosai da farko, sannan ka yanke shawara: 