35 because if you half the amount of salads he's eaten (seeing as he eats one burger for every two salads) then the extra one is the first salad in the cycle.
What you do is cross multiply 1.5 x p & 6 x 10 after divide 1.5 on each side to get p alone 1.5p/1.5 & ___/1.5 you should get your answer to what p equals hope this helped
