1) A ticket for an adult viviting an exhibition costs x cents.
A ticket for a child costs 30cents less than an adult's ticket.
A) Write dow in terms of x,the cost of a child's ticket.
B) Mr.Smith takes his three children to the exhibition.
Find,as simply as posssible in terms of x,the total cost in cents for the four tickets.
2007-01-17 09:48:32 · 6 answers · asked by star 2 in Science & Mathematics ➔ Mathematics
a) You're told that an adult ticket costs X cents, and that a child ticket is 30 cents less than this. So a child ticket is just X - 30 cents, no matter what X is.
b) This person bought one adult ticket plus three child tickets. If an adult ticket costs X cents and the child tickets each cost (X-30) cents, then the total is going to be the price of an adult ticket plus three times the cost of a child ticket. This would be X + 3*(X-30). You can simplify this expression:
X + 3*(X-30)
X + 3*X - 3*30
X + 3*X - 90
4X - 90
You can't simplify it any futher, so that's your answer: 4X-90.
2007-01-17 09:55:16 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Adult ticket costs:
x (in cents)
Child ticket cost 30 cents less than an adult ticket:
A) x - 30 (in cents)
Adult plus 3 children:
x + (x - 30) + (x - 30) + (x - 30) =
x + x + x + x - 30 - 30 - 30 =
B) 4x - 90
(or if you want to say that x is in dollars, then each child's ticket is x - 0.30, so you'd get 4x - 0.90 instead. Just remember, units make a difference...otherwise you might think the adult ticket cost $5, and the children's tickets cost $5 - $30 = negative $25...)
2007-01-17 17:52:27 · answer #2 · answered by Jim Burnell 6 · 0⤊ 0⤋
A) Let adults ticket be x. childs ticket is x - 30
B) one adult and three children. x + 3(x - 30), or x + (x - 30) + (x - 30) + (x - 30). Drop the parentheses, x + x - 30 + x - 30 + x - 30. Group together, x + x + x+ x - 30 - 30 - 30. Simplify. 4x - 90.
2007-01-17 17:58:15 · answer #3 · answered by gamblin man 6 · 0⤊ 0⤋
x = 10
x-.30 = 7
x-.30(3) = 21
If x = 10 and Mr. Smith takes his three children to the exhibit, Mr. Smith should pay 31 dollars to attend with his children.
x -.30 = cost of the child's ticket
2007-01-17 18:01:21 · answer #4 · answered by sheila_0123 5 · 0⤊ 1⤋
A) X - .30
B) X+3(X-.30)
X+3X-.90
4X-.90
2007-01-17 17:52:33 · answer #5 · answered by Anonymous · 0⤊ 0⤋
A) x-30
B) ((x-30) x 3) + x
=(3x - 90) + x
= 4x - 90
2007-01-17 17:52:57 · answer #6 · answered by emmabee2203 2 · 0⤊ 0⤋