 
<translate> Sun kashe dala 8 kowannensu akan cheeseburgers da milkshakes saboda 3 + 5 = 8. Sun kashe $16 a kan waɗannan abubuwa duka domin 2 x 8 = 16. Sun kashe $24 akan abincinsu domin 16 + 8 = 24. Suna da $30 don farawa domin 24 /.8 = 30. Dan uwansa yana da $10 domin 30 - 20 = 10. Saboda haka, amsar ita ce 10. <eng> They spent $8 each on cheeseburgers and milkshakes because 3 + 5 = 8. They spent $16 on these items in total because 2 x 8 = 16. They spent $24 on their meal because 16 + 8 = 24. They had $30 to start because 24 / .8 = 30. His cousin had $10 because 30 - 20 = 10.
Therefore, the answer is 10. 