Question

On the assembly line it takes 2 ½ minutes to complete task one, 3 minutes 10 seconds to complete task two and 1 minute to complete the last task to make an item.How many items can be completed in 25 minutes?

Answer 1

Task 1 -----
`2 (1)/(2)`minutes
Task 2 ----- 3 min 10 sec = 3+10/60 =
`3(1)/(6)` minutes
Task 3 ----- 1 min
Total time to make 1 item =
`2 (1)/(2)` +
`3 (1)/(6)` +1 =
`6 (2)/(3)`minutes

In 25 minutes;

Number of items made = 25/(6 2/3) = 3.75 items = 3 items (since only a fully assembly can be regarded as an item).