HEY DEAR
Step-by-step explanation:
Given:- SP = 23,000
Gain% = 15%
CP=?
CP = 100× S.P / (100+ profit%)
CP= 100× 23,000/ 100+ 15%
HOPE ITS HELPFULL.:)
Giovanni purchased 20 adult tickets and 5 child's tickets.
Step-by-step explanation:
Let,
x = Adult tickets
y = Child's tickets
According to given statement;
x+y=25 Eqn 1
One adult ticket costs $14 and one child ticket costs $8, therefore,
14x+8y=320 Eqn 2

Putting value of x in Eqn 1;

Giovanni purchased 20 adult tickets and 5 child's tickets.
Keywords: Linear equations, Addition
Learn more about linear equations at:
#LearnwithBrainly
the answer would be -6=-6