3/4-1/5 please i give branliest

0.55

Step-by-step explanation:

11/20

(Result in decimals: 0.55)

Step-by-step explanation:

3/4 -  1/5

=  

3 × 5         1 × 4

 -    

4 × 5        5 × 4

=  

15/20 –4/20

=  

15 – 4

  20

=  

11/ 20

Hope I helped Maybe Brainliest

Rate of jet in still air = 960 miles/ hr

Rate of the wind = 230 miles/ hr

Step-by-step explanation:

Let the speed of jet in still air = miles/hr

Let the speed of air = miles/hr

So, against the wind, the resultant speed = miles/hr

And, with the wind, the resultant speed = miles/hr

Distance traveled against the wind = 2920 miles

Time taken against the wind = 4 hrs

Formula for distance is:

Distance traveled with the wind = 7140 miles

Time taken against the wind = 6 hrs

Adding (1) and (2):

Putting in (1):

Therefore, the answer is:

Rate of jet in still air = 960 miles/ hr

Rate of the wind = 230 miles/ hr