Answer:
7/20
Step-by-step explanation:
Add the numbers up which is 20 and then the purpose of bill is the middle one and 7 is the middle in the ratio
2\x^-5y this is for the first one
and for the second i do'nt know sorry
(4\7=0.57)
(65x3=195)
195+0.57=195.57-5=190.57