Question

a mechanical device in a workshop produces items at a constant rate of 60 items per hour. at this rate, how many items will the mechanical device produce in 3 hours?

Explanation:

Step1: Analyze the problem

We know the production rate is 60 items per hour and the time is 3 hours. We need to find the total number of items produced.

Step2: Use the formula

The formula for the total number of items \(N\) is \(N=\text{rate}\times\text{time}\). Here, rate \(r = 60\) items/hour and time \(t=3\) hours. So \(N=60\times3\).

Step3: Calculate the result

\(60\times3 = 180\).

Answer:

180