John and maria are spending the afternoon hiking in the desert. they purchased 6 bottles of water for $9.00, two protein bars for $5.00, and some peanuts for $3.00 as a snack. suppose they star hiking at 11.30 a. m. and finish the hike at 3.45 p. m. what is the unit rate of money spent to hours hiked? show your work.

Step-by-step explanation:

They spent

Total cost $17.

Now, if the hiked from 11.30 AM to 3.45 PM, then they hike for 4 hours and 15 minutes. However, we need to transform those minutes into hours before we find the rate

So, they hiked for 4.25 hours.

Then, to find the unit rate of money spent per hour hiked, we just need to divide $17 by 4.25 hr.

Therefore, they spent $4 per hour hiked.

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.