 
<translate> Bari X ya zama adadin manya da ke halartar wasan. Yawan yaran da suka halarci wasan kwaikwayon shine 3 * X. Gidan wasan kwaikwayon ya tattara jimlar 7 * X + 3 * (3 * X) = $ 6,000. Ta hanyar ninkawa ta hanyar iyakance muna samun 7X + 9X = $6,000. Ƙara abubuwa kamar haka sai mu sami 16X = $6,000. Raba bangarorin biyu da 16 mun samu X = 375, yawan manya da suka halarci kide kide. Yawan yaran da ke halartar waƙar sun ninka wannan adadin sau uku: manya 375 * yara 3 / manya = yara 1125. Yawan mutanen da ke halartar wasan kwaikwayon shine 375 + 1125 = mutane 1500. Amsar ita ce: 1500. <eng> Let X be the number of adults attending the concert. The number of children attending the concert is 3 * X. The theater collected a total of 7 * X + 3 * (3 * X) = $6,000. Multiplying through the parentheses we get 7X + 9X = $6,000. Adding like terms we get 16X = $6,000. Dividing both sides by 16 we get X = 375, the number of adults attending the concert. The number of children attending the concert is triple this number: 375 adults * 3 children / adult = 1125 children. The number of people attending the concert is 375 + 1125 = 1500 people.
The answer: 1500. 