solve this math problem

Question

On a certain day, the company took 103 people on whale watching trips. There were 64 children aged 12 and under, of which some children were under 3 years. If x represents the number of children under 3 years, which equation can be used to find the value of x, where C represents the total amount of money collected from tickets that day?

A.) (103 + x)34 + (103 −(64 + x)) ⋅ 45 = C

B.) (103 − x)34 + (103 − 64) ⋅ 45 = C

C.) (64 − x)34 + (103 − 64) ⋅ 45 = C

D.) (64 + x)34 + (103 −(64 + x)) ⋅ 45 = C

Answer 1

C) (64-x)34 + (103-64)=C,

with x=under 3 free, children 3 to 11 $34 each, over 11 $64 each

64(34)+39-C= 34x

x= 64+39/34 -C/34