Question

At an international airport planes take off at 3,4,8,12,and 15, min intervals at 7:30am planes left when they will take together again

Answer 1

Answer:

120 min = 2 hrs

Step-by-step explanation:

take lcm of given numbers

3 =3

4=2×2

8= 2×2×2

15 = 3×5

Lcm of 3,2,2,2,2,2,3,5 is 120 minutes

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