Three babies A, B and C cry out at every interval of time. Baby A cries out at every 20 minutes, while B
cries out at every 30 minutes and C at every 40
minutes. If they are observed at the same time, after
what time will the three of them cry together?​

LCM of 20, 30, and 40

LCM = 120

they would cry together for the first time in 120 minutes.

the answer is below :)

Step-by-step explanation:

for this we have to use lcm of 20 30 and 40

2|20,30,40

2|10,15,20

2|5,15,10

5|1,3,2

2|1,3,1

3|,1,1

120÷60

after 2 hours

8 2/3 is the answer

step-by-step explanation: just use a calculator

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step-by-step explanation:

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