Blythe shaded 4 columns and 3 single squares of a 100 square grid to represent the portion of days that it rained last year. What percent if the grid did she not shade?

We have been given that Blythe shaded 4 columns and 3 single squares of a 100 square grid to represent the portion of days that it rained last year.

We know that one column of a 100 square grid is equal to 10 single squares. So 4 columns will be equal to 4 times 10 single squares that is .

Total shaded squares: .

Now we will find the number of squares that are not shaded by subtracting number of shaded squares (43) from total squares (100).

Now we need to find 57 is what percent of 100.

Therefore, Blythe did not shade 57% of the grid.

step-by-step explanation: given equation a = h(b 1+b 2)

also we are given values of a, h and b 1 as :

a = 16, h = 4, and b 1 = 3.

in order to solve it for b 2, we need to plug the given values of   a, h and b 1 .

therefore, plugging values of   a, h and b 1   in given equation, we get

16 = 4( 3 + b 2)

first dividing both sides by 4, we get

4 = 3 + b 2

subtracting 3 from both sides, we get

4 -3 = 3 -3 + b 2

1 = b 2.