Heart OF Algebra

Question

Meg and her sister are going to m make 30 sandwiches for the family picnic. If Meg can make a sandwich in 35 sec and her sis can make a sandwich in 29 then how long will it take both girls to complete the job 

Answer 1

t represents the time both send

 

t/35 + t/29 = 30

29t + 35t + (35)(29)(30)

 

Can you solve for t and answer?