Math, asked by sufyansajid6605, 1 month ago

the green light changes after every 30 seconds in traffic signal A and after every 45 seconds in traffic signal B if both signals change together at 5.p.m when will they change together next???

Answers

Answered by lovernavi

4

Answer:

LCM of 45,75 and 90=450 seconds.

i.e. 7 minutes 30 seconds.

∴ Required time =7:27:45 hours

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