Originally Posted by

**Mathssub** hi all just wondering if you could assist me with the following question

there are two types of boxes. light boxes which weigh 120kg and heavy boxes which weigh 170kg. a truck can carry at most 3890 kg. the time taken to load a heavy box is 7 minutes. the time taken to load a light box is 6 minutes. the total time spent loading a truck cannot be greater then 177 minutes.

a) taking x as the number of heavy boxes and y as the number of light boxes, model two linear inequalities in x and y