It is not a fiction ......
Answer:
I will answer in a general way because the options are not given.
We know that the area of model A is smaller than the area of model B.
For model A, we have 72 shaded sections, out of 100.
Then the quotient of model A is:
72/100 = 0.72
For model B we have 10 sections, and x shaded ones.
Because model B is greater than model A, we know that:
x/10 should be larger than 72/100
then we have the inequality:
x/10 > 0.72
x > 0.72*10
x > 7.2
And we can not have more than 10 shaded sections (because there is a total of 10 sections) then:
10 ≥ x > 7.2
Then x can be any whole number in that interval.
the possible values of x are:
x = 8
x = 9
x = 10
If Charlie runs 3 yards per second and there are 3600 seconds in an hour, then he runs
3 * 3600 = 10800 yards per hour.
There are also 1760 yards in one mile, so we need to divide 10800 by 1760 to find out how many miles it is:
10800 ÷ 1760 =
= 6,136363636363636
I think we should round it:
6,136363636363636 ≈ 6,1
Answer: Charlie runs with a speed of about 6,1 miles per hour.
A+B: the matrix with same dimension a A and B, the element in row i and column j is: Aij+Bij
Same for A-B, but with Aij-Bij
