Ineed this answer with log 91 - log 13 /log 245 - log 5

log 91 - log 13  = log 91/13 = log 7

log245 - log 5 = log 245/5 = log 49

so the division gives log 7 / log 49

= 0.5    answer

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right