One-third of a number is 12 less than the number

Can someone answer this question? : )

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?

How long does it take natsumi to clean up after she is done? table: .area time30. 245. 2.7560. 3.5