How do i write 157.50 earned in 15 hours as a unit rate per 40-hour worksheet

If Person A earned 157.50 over 15 hrs, you would do 157.5/15 = 10.5. This means Person A earns $10.5/hr, and to get the 40 hour rate, you would do 10.5 X 40 = $420 per 40 hours.

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm