in the figure shown, the measure of angle prs is how many degrees greater than the measure of angle pqr ?
1) the measure of angle qpr is 30
2) the sum of the measures of angles pqr and prq is 150
1) if qpr is 30, then prs is 90-x and pqr is 60-x, prs is 30 degrees > than pqr -> suff.
2) this yields the same that qpr is 30 degrees so it is suff. as well
answer is D