Alex stocks up for winter. he buys 36 cans of vegetables. he pays 80 cents per can for tomatoes and 40 cents per can for corn, for a total cost of $20.8. how many cans of corn does he buy?

Let the number of tomato cans be x, and the number of corn cans be y. We can then set up a system of equations to solve this problem.

x+y=36

0.8x+0.4y=20.8

Lets rearrange the first equation to find the value of one variable.

x=36-y

We can then substitute this value into the other equation, and solve for y.

0.8(36-y)+0.4y=20.8

28.8-0.8y+0.4y=20.8

-0.4y=-8

0.4y=8

y=20

Lastly, we can take this value and plug into the first equation to find the value of the other variable.

x+20=36

x=16

Thus, he bought 16 cans of tomatos and 20 cans of corn.

step-by-step explanation:

what is the figure? attach a picture.

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.