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}

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}

cwrw238 · Answer

let number of 6 letter words  y and number of 7 letter words = x

now there are a total of 30 words so we can write 

x + y =  ?

anonymous · Answer

telling me the answer doesn't help @Max_The_Awesome

anonymous · Answer

Ok sorry

anonymous · Answer

let number of 6 letter words y and number of 7 letter words = x now there are a total of 30 words so we can write x + y = ?