25% = 0.25
40 / 0.25 = 160
40 is 25% of 160.
There are 160 children in the club.
Answer:
x=17°
Step-by-step explanation:
163+x=180 (L.P)
x=180-163
x=17°
Substitution or elimination
4x = student tickets, 7x = adult tickets
4(120) + 7x = 1500
480 + 7x = 1500
7x = 1020
X = 145 adult tickets
