A clock gains 4 minutes per hour. One day it is set to the correct time at 9:00 a.m. What is the correct time when the clock shows 1:00 p.m that afternoon?
2006-10-30 20:27:46 · 13 answers · asked by Arnav 3 in Science & Mathematics ➔ Mathematics
It gains 4 minites per hr.
so for 60 minutes it goes 64 minutes
if it goes 64 minutes time passed is 60 minutes
it has gon 240 minutes
time passed = 240 * 60/64 = 15*15 or 225 minutes
so time = 12.45 pm
2006-10-30 20:40:36 · answer #1 · answered by Mein Hoon Na 7 · 0⤊ 0⤋
Since it gains 4 minutes per hour, subtract 4 minutes for every hour that has passed between 9am and 1pm.
Total number of hours = 4
Gains 4 mins per hour we have 4 X 4 = 16 minutes
13:00 - 00:16 = 12:44pm is the actual time
2006-10-30 20:49:28 · answer #2 · answered by Loral 2 · 0⤊ 0⤋
The best way to solve is
time showing = actual time + 4 /60 multiplied by hours gone since 9 a.m.
Hours gone by as per clock = 4 hours, hence actual time ('t') will be
1.00 p.m. = t+(4/60)*4
or 1.00 p.m. = t+16/60
or t = 1.00 p.m. - 16/60 hr
or t = 12.44 p.m.
Hence the correct time will be 12.44 p.m. when it shows 1.00 p.m. in the clock
2006-10-30 20:45:19 · answer #3 · answered by young_friend 5 · 0⤊ 0⤋
10:00 shows 10:04
11:00 shows 11:08
12:00 shows 12:12
12:15 shows 12:28
12:30 shows 12:44
12:45 shows 01:00
the answer is 12:45 every 15 minute will gain 1 minute
2006-10-31 00:33:15 · answer #4 · answered by safrodin 3 · 0⤊ 0⤋
if it gains 4 minutes: 4 min. x 4 hours =16 min therefor it would be 1:16
2006-10-30 21:10:37 · answer #5 · answered by bttrflygld 2 · 0⤊ 0⤋
Since 4 hours have passed and I'm reading "that afternoon" as the same day. It would be 1:16PM
2006-10-30 20:33:43 · answer #6 · answered by LaxPlayer35 1 · 0⤊ 0⤋
clock moves 4 hrs=240min
moves 64 min every real hr so
240/64=3.75hrs have elapsed it is really 12:45 pm
2006-10-31 05:10:00 · answer #7 · answered by yupchagee 7 · 0⤊ 0⤋
Correct time will be 12:44 (pm)
2006-10-30 21:00:39 · answer #8 · answered by MY Regards to All 4 · 0⤊ 0⤋
If it gains 4 minutes every hour then:
at 10.00 it will show 10.04,
at 11.04 it will show 11.08,
at 12.08 it will show 12.12 and
at 1.12 it will show 1.16
Therefore at 1.00pm it will show 12.44 since you minus 16 minutes that have gone past.
2006-10-30 20:36:56 · answer #9 · answered by CJ 3 · 0⤊ 0⤋
12:54 pm
2006-10-30 21:35:51 · answer #10 · answered by AboYasser 1 · 0⤊ 0⤋