explain step by step
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Answered by
0
Answer:
10pm
Step-by-step explanation:
the sum of all whistletime is 7hour add 7 in 3pm and answer will come 10pm
Answered by
6
trains will whistle together after 2 days at 11pm
Step-by-step explanation:
trains whistle every 120 , 140, 160 mins
so to find after what interval of time they whistle together
we need to find lcm of
120, 140 & 160
120= 2*2*2*3*5
140= 2*2*5*7
160=2*2*2*2*2*5
lcm = 2*2*2*2*2*3*5*7
=3360 mins
= 56 hrs
= 2 days + 8 hrs
trains will whistle together after 2 days at 11pm
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