Question

80 machines can make 4800 identical pens in 8 hours. at this rate how many pens will 25 machine produce in 7 hours

Answer 1

Answer:

1225(practical)  or 1312.5( theoretical)

Step-by-step explanation:

• pens per hour by 80 machines = 4800/8 = 600
• pens per machine per hour = 600/80 = 7.5(calculation only).
• But 7.5 is not possible practically so only 7 pens are produced within a hour.
• total pens by 25 machines in 7 hours is calculated as
•   PRACTICAL                                                    THEORETICAL  

           25 X 7 X 7                                                        25 X 7 X 7.5  

       =   175 X 7                                                          = 175 X 7.5

       =   1225                                                              = 1312.5