4 clocks sound the alarm at 6, 8, 12, and 18 minutes, respectively. What time do the clocks, which started operating at 6 o'clock, sound the alarm together? (a) 7 hours (b) 7 hours 12 minutes. (C) 7 hours 22 minutes. (d) 8 hours 4 minutes
Answers
Answered by
1
Answer:
(b) 7 hrs 12 min
Step-by-step explanation:
Given timings are 6, 8, 12, 18
L.C.M = 72 min
72 min = 1 hr 12 min
6 o clock they started
so 6 + 1 hr 12 min = 7 hr 12 min
Answered by
1
Step-by-step explanation:
correct answer is option no. b
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