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Q. Seven machines take 7 minutes to make 7 identical toys. At the same rate, how many minutes would it take for 100 machines to make 100 toys?
(A) 1 | (B) 7 | (C) 100 | (D) 700 |
Ans: 7
Sol:
Seven machines take 7 minutes to make 7 identical toys. As all the machines are working parallelly, one machine takes 7 minutes to make 1 toy. Here, the time taken by a machine to make a toy is independent of the number of machines operating. So, 100 machines will take 7 minutes to make 100 toys.