Answer: There are 69 adults and 72 children went to the concert.
Step-by-step explanation:
Let x be the number of adults, and y be the number of children.
x + y = 141
3.5x + 2.5y = 421.5
x + y =141
x = 141 - y
3.5(141 - y) + 2.5y = 421.5
493.5 - 3.5y + 2.5y = 421.5
493.5 - y = 421.5
-y = -72
y = 72
x + 72 = 141
x = 69
Answer:2/20 or 20%
Answer:12 units^2
2*2=4
2*2*1/2=2
2*6*1/2=6
4+2+6=12
12 units^2
Answer:
105 is the part.
175 is the whole
60% is the percent
x is the part
175 * 0.60 = 105
