The number of students registered for the annual dodgeball tournament decreased by 23% between last year and this year. Last year, there were 100 students registered for the dodgeball tournament. How many students are registered this year? *

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)