30. An amusement park charges $27 for adult tickets (a) and $24 for children's tickets (c) Monday the amusement park sold 272 tickets and collected $7.137
Which system of equations is a correct representation of this data?
AO 27a + 24c = 272
51a + 51c = 7.137
CO a+c=272
24a + 27c = 7.137
B. O a+c= 272
27a + 24c = 7.137
D. O a+c= 7.137
27a +24c = 272

ans789

step-by-step explanation:

answer:

total cost for tiles and paints is $924.  

step-by-step explanation:

we have been given that a community hall is in the shape of a cuboid. the hall is 40m long 15m high and 3m wide.

the paint will be required for 4 walls and ceiling.

let us find area of walls and ceiling.

therefore, the area of walls and ceiling is 1410 square meters.

given: cost for 10 litre of paint is $10 and 10 litre paint covers 25 square meter. therefore,

therefore, the total painting cost is $564.

tiles will be required for floor. let us find the area of floor.

given: 1m squared floor tiles costs $3. so,

therefore, the total tiles cost is $360.

now let us find combined total cost of tiles and paint.

therefore, the combined total cost of tiles and paint is $924.