Question

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Answer 1

Question:

The blades of a mixer revolve 14,400 times in every 5 seconds. How many times does it revolve in 1 hour?

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GivEn:

• Blades of mixed revolve 14400 in every 5 seconds.

To finD:

• Times does blades revolve in 1 hour

Solution:

Here, given that

blades of mixer revolve 14400 in 5 seconds.

∴ In 1 second, blades revolve => 14400/5 = 2880 times.

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We know that:

• 1 hour = 60 minutes
• 1 minute = 60 second
• ∴ 60 minutes = 60×60 = 3600 second.

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Now,

We know that blades of mixer revolve 2880 times in 1 second.

And,

We have to find that how many does blades revolve in 3600 second ( ∵ 1 hour = 3600 second).

Finding:

∵ In 1 second, blades revolve = 2880

∴ In 3600 second, blades revolve =

2880 × 3600

= 10368000 Times

Therefore,

Blades will revolve 10368000 Times in 1 hour.

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