Hello eveyone!

two machines:

type A costs £50 per day and needs one person to operate it,

type B costs £20 per day and needs 4 people to operate it

let x be the number of type A

let y be the number of type B

1. a contracter has a labour force of 64 people, explain why x+4y is less than or equal to 64

2. a contractor can spend up to £1040 per day on hiring machines, explain why 5x+2y is less than or equal to 104

thanks!