pound, and y pounds of yogurt covered raisins, which sell for $1.20 a pound. sara bought a total of 40 pounds of the two types of raisins for a total of $51.90." please help me write a system of equations to model this scenario!

Brûh the first part of the problem is missing type it again but its gonna be

the missing number as the coefficient of x (so for example if the number is 9 then its gonna be 9x) plus 1.20y=51.90

so like example:
9x+1.20y=51.90
x+y=40

but obviously not 9 yk

The answer is 10. and if you go by pemdas you would 1. multiplication 2. division 3. addition 4. subtraction