Mr Willis drove 318 miles over 5 days. He drove the same number of miles on the first four days. On the fifth day he drove 3 more miles than the other days

Step-by-step explanation:

Total distance covered, D = 318 miles

Let he drove distance d in each first four days

distance covered in fifth day = 3 + d

So, the total distance covered = 4 x d + 3 + d = 5d + 3

According to the question

5d + 3 = 318

5d = 315

d = 63

So, he cover 63 miles in each first four days and fifth day he cover 63 + 3 = 66 miles.

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area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2