Math, asked by lalitdragon85, 7 months ago

traffic light at the three different crossing on a road change after every 10 minutes 15 minutes and 20 minutes respectively if they change together at 9 pm first when will they change together again

Answers

Answered by mastermoinak

3

Answer:

they will change together again in 9:05 pm

Step-by-step explanation:

as the hcf of the different changes is :5

so they are changing together at next 5minutes

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