Last year, mcbarkie's burgers contained 200 grams of fat in each burger. this year, the amount of fat has been reduced to 120 grams per burger. what is the percent of decrease in the number of grams of fat per burger to the nearest percent?

the 2 figures are congruent bc if you reflect abcd over the y axis then over the d axis the figures overlap

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq