Admission to a county fair costs 20 for two adults and one child and 16 for one adult and two children. what is the cost for one adult?

cost of 1 adult = 8

Explanation:

two adults and one child == 20

one adult and two children == 16

what is the cost for one adult?

2 adults + 1 child == 20

1 adult and 2 children == 16

if 1 adult price is x and let 1  children be y

2x + y = 20      (1)

x  + 2y =16       (2)

using simultaneous equation of substitution method

eqn (1) becomes y = 20- 2x      (3)

input eqn (3) in (2)

x  + 2(20- 2x) =16                  (4)

x + 40 - 4x = 16

40 -3x =16

-3x = 16 - 40 = -24

x == 8

since x equal 8

therefore, cost of 1 adult = 8

answer; i believe the correct answer is (tall); ///good luck

x=3

step-by-step explanation:

this is really simple i saw that there was only one term (5x) and thought if that was 15 what would i have to multiply everything else to get it there? well if 5x became 15 then x would have to be 3 so plug the 3 in the x for the other equations and you get 15 for the other ones. so there you go. : )