What two consecutive numbers make 81

let one number = x

and other number=x+1

acc.to.ques.

x+x+1=81

2x+1=81

2x=81-1

2x=80

x=80/2

x=40

and other number=x+1

x+1=40+1

41

two nos. = 40 and 41

40 and 41.

Step-by-step explanation:

81/2 = 40.5, thus 40 and 41

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.

the correct answer is c