12539463
29.06.2019 •
Mathematics
Acone has a slant height of 6 inches and a lateral surface area of 47.1 square inches.what is the base radius of the cone
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Ответ:
The required number of machines is 24.
Step-by-step explanation: Given that a machine can stamp 40 envelopes in 8 mins.
We are to find the number of machines that are working simultaneously are required or needed to stamp 120 envelopes per minutes.
We will be using the UNITARY method to solve the given problem.
In 8 minutes, number of envelopes stamped by a machine = 40.
So, in 1 minute, the number of envelopes stamped by the machine is given by
Now, number of machines required to stamp 5 envelopes in 1 minute = 1.
So, number of machines required to stamp 1 envelope in 1 minute is
Therefore, the number of machines required to stamp 120 envelopes in 1 minute is given by
Thus, the required number of machines is 24.