Find the Average 
100-90-80-89-75-0

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72.3

round from 72.3333333333333333333333333333333333333333333333

Step-by-step explanation:

72.3

Explanation: Next time you need to find the average you have to add all the numbers together then divide that number by the number of numbers there are. So 100+90+80+75+0 = 434. 434 divided 6 = 72.3.

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.