If Davis buys 10 notebooks, then he will have $10 left over. If he tries to buy 15 notebooks, then he will be $10 short. How much money does Davis have? ASAP

$ 50

Step-by-step explanation:

c =cuadernos

x= dinero davis

10c+10=x

15c- 10=x

10c+10=15c- 10

20=5c

c=4

=>10(4)+10=x

x=50

15(4)- 10=x

x==50

reeasy =)

ummm seems that u didnt post the attachement !

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.