Question

A machine can stamp 40 envelopes in 8 minutes. How many of these machines, working simultaneously, are required or needed to stamp 120 envelopes per minute?

Answer 1

Divide 40 by 8 minutes to find the quantity per minute for one machine:

40 / 8 = 5 per minute.

One machine does 5 envelopes per minute.

Now divide 120 by 5 to find the number of machines needed:

120 / 5 = 24

24 machines would be needed.

Answer 2

The number of machines, working simultaneously, that are required or needed to stamp 120 envelopes per minute is 3 machines.

Given the following data:

• Number of envelopes = 40 envelopes

• Time = 8 minutes

To find how many machines, working simultaneously, are required or needed to stamp 120 envelopes per minute:

In order to solve this mathematical problem, we would use direct proportion.

By direct proportion:

40 envelopes = 8 minutes

120 envelopes = X minutes

Cross-multiplying, we have:

$40 \times X = 8 \times 120\\\\40X = 960\\\\X = \frac{960}{40}$

X = 24 minutes

For the number of machines:

$Machine = \frac{24}{8}$

Machine = 3 machines

Read more: https://brainly.com/question/18676621