Asked by maxy

there was a total of 840 guests at a wedding dinner. 60% of them were adults, and the rest were children. some boys left before the dessert was served. as a result, the percentage of adults increased to 70%. how many boys left before the dessert was served
Answered by Damon
original:
840 total
504 adults
336 children

final
840 - b total
504 adults
336 - b children

so
504 adults = .7(840 -b)
all set?
Answered by Anonymous
b=132
Answered by Mathster
120 boys left before dessert was served
Answered by JOHN CENA
60% = 504
30% = 336

Solve by Proportion
504/336-x = 7/3

2352 - 7x = 1512
-7x = -840
x = 120
Answered by Jiskha admin
120
Answered by Youssef
120 boys left
Answered by uzi vert
Symere Bysil Woods, known professionally as Lil Uzi Vert, is an American rapper, singer, and songwriter. Characterized by his face tattoos, facial piercings, eccentric hairstyles and androgynous fashion, his music is defined by often dark subject matters and imagery built on a melodic emo approach to trap