The fish market sell 16 pound of fish and 12.5 pound of lobster.
Answer:
Step-by-step explanation:
Sum means add
the number is x
13 divided by a number is 13/x
the number divided by the number is x/13
so

also can be simplified to

or

translated it is

where x is the number
1. 40m^2 2.150ft^2 3.99in^2 4.70m^2