Shawna can paint a fence in 8 hours. kevin can paint the same fence in 4 hours. how long will it take them working together? show all work.

The answer is:

The will paint the same fence at the same time in 2.67 hours.

From the statement we know that Shawna can paint a fence in 8 hours while Kevin can paint the same in 4 hours, and we are asked to calculate how long will it take them to paint the fence working together, so, calculating we have:

For Shawna, we have:

For Kevin, we have:

So, the combined work for both Shawna and Kevin will be:

Now, if the want to paint the same fence at the same time, we can calculate it by the following way:

Hence, the will paint the same fence at the same time in 2.67 hours.

Have a nice day!

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m

false

step-by-step explanation: