Math, asked by geetmaheshwari, 7 months ago

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Answered by Anonymous

Answer:

Do the LCM of Numbers 12,3,8,10,4

Then U will get the first time when they Meet

Then Divide total time with that u will get...

Option D 4 Times is ur Answer......

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Answered by alexander27

Correct answer is option 'D'.

We need the next instances when the alarm rings.

That means the Least Common Multiple (LCM) of 3, 4, 8, 10, 12 3, 4 divide 12 so neglect them.

take LCM of 8, 10 and 12

∴ LCM = 4x2x5x3= 120 = They ring after 2 hours

After starting, they ring together ist time in 2 hours.

Then 2nd time in 2+2 = 4 hours.

Then 3rd time in 6 hours.

And 4th time in 8 hours.

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