Amachine produces 240 bolts in 25 minutes. at the same rate how many bolts would be produced in 45 minutes

There are two ways you can find the answer to this question and both ways will give you the correct answer.

Method One:

If 240 bolts are produce in 25 minutes
then the number of bolts produced per minute  =  240bolts ÷  25min
                                                                           =  9.6 bolts/ min

∴ bolts produced in 45 minutes   =   9.6 bolts/min ×  45min
                                                    =   432 bolts

Method TWO

240  bolts  is produced in 25 mins                240 bolts    →    25 mins
   x      bolts are produced in 45 mins                 x           →     45 mins
                                                                   
                                                                           25x  =  (240)(45)
                                                                               x  =  10800 ÷ 25
                                                                                   =  432