The traffic lights of three different road crossings change after every 72, 96, 120 seconds respectively. If they change simultaneously at 6:00 am, at what time will they change simultaneously again ?
pls very emergency tell me fast and correct i will mark u the brainlliest.
Share
Answer:
Step by step explanation:
GivEn:
To find:
Solution:
⠀⠀━━━━━━━━━━━━━━━━━━━━━━━━━
⌬ By taking LCM, We get,
[ Refer attachment ]
⇏ 1440 ÷ 60
⇏ 24 minutes
∴ Thus, At every 24 minutes the lights will change again simultaneously.
⠀⠀━━━━━━━━━━━━━━━━━━━━━━━━━
« Now, Let's find at what time they will change simultaneously again,
• As they changed last at 6:00 am,
⇏ 6 : 00 : 00 Am + 0 : 24 : 00 mins
⇏ 6 : 24 : 00 Am
∴ Hence, At 6 : 24 : 00 they will change simultaneously again.
Answer: