₦airaland Forum

A digit wristwatch was set accurately at 8:30a.m., and then lost 2 seconds every 5minutes. What time was indicated on the watch at 6:30 p.m of the same day if the watch operated continuously until that time?

Who can get this right?

MrSmith007:
A digit wristwatch was set accurately at 8:30a.m., and then lost 2 seconds every 5minutes. What time was indicated on the watch at 6:30 p.m of the same day if the watch operated continuously until that time?

Who can get this right?

6:26 pm... Hope am correct, didn't use calculator just normal multiplication by heart abi head anyone sha

Between 8:30am to 6:30pm is 10 hours in-between

We have 60 minutes in 1 hour, but we loose 2 X (60/5) seconds every hour... Which is 24 seconds every hour

24 X 10 =240 seconds lost in total

240/60 = 4 minutes

Thus we have a time lag of -4 mins which turns 6:30 to 6:26 pm

sammydemperor:
Between 8:30am to 6:30pm is 10 hours in-between

We have 60 minutes in 1 hour, but we loose 2 X (60/5) seconds every hour... Which is 24 seconds every hour

24 X 10 =240 seconds lost in total

240/60 = 4 minutes

Thus we have a time lag of -4 mins which turns 6:30 to 6:26 pm

reasonable

sammydemperor:
Between 8:30am to 6:30pm is 10 hours in-between

We have 60 minutes in 1 hour, but we loose 2 X (60/5) seconds every hour... Which is 24 seconds every hour

24 X 10 =240 seconds lost in total

240/60 = 4 minutes

Thus we have a time lag of -4 mins which turns 6:30 to 6:26 pm

Dead on arrival, i was going to post the exact same answer as yours, but you have clearly killed it. If the Op say you miss am, sue him