Hi,tracywham wrote:Hi, I have doubts on the answer for this question:

A machine takes 60 seconds to cut an iron rod into 6 equal parts, At this rate, how long will it take the machine to cut the rod into 9 equal parts?

The book answer is 96s. Is it correct? How? I keep getting 90s.. Please advise. Thank you

"6 equal parts" means 5 cuts

"9 equal parts" means 8 cuts

5 cuts → 60 s

1 cut → 12 s

8 cuts →

**96 s**

Hope this helps.

**speedmaths**

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