Question

PLEASE HELP WILL GIVE MEDAL AND FAN !!!

A third grade class had a spelling bee with 6-letter and 7-letter words. They used 30 words that had a total of 190 letters. Which system of linear equations represents the problem?

(A) {7x + 6y = 139}
{x + y = 30}

(B) {7x + 6y = 30}
{x + y = 190}

(C) {6x + 7y = 160}
{x + y = 30}

(D) {6x + y = 30}
{x + 7y = 139}