It took me 3 hours to visit my friend in Maine, averaging a speed of 58 miles per hour. If it took me 15 minutes less to get back home, what was my average speed coming home?

the average speed coming home is 63.3 mph

Step-by-step explanation:

Let x represent your average speed while you were going home.

Distance = speed × time

It took me 3 hours to visit my friend in Maine, averaging a speed of 58 miles per hour. This means that the distance travelled on your way to your friend's house is

3 × 58 = 174 miles

If it took me 15 minutes less to get back home, it means that the time you spent in going back home is 3 - 0.25 = 2.75hours

Distance covered while going back home is

2.75 × x = 2.75x

Assuming the distance is the same, it means that

2.75x = 174

x = 174/2.75

x = 63.3 mph

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.

146

step-by-step explanation: