Answer:
Area = 
Step-by-step explanation:
Length of the given rectangle 'l' = (15 -
)
Width of the given rectangle 'w' = 
Area of the rectangle = lw
= 
= 
= 
Therefore, expression that defines the area of the given rectangle will be,
Area = 
Answer: 21
Step-by-step explanation:
7/10s of 40 would be 28 so that leave 12 hours to work inside