How many minutes is it before 12 noon, if 44 minutes ago it was three times as many minutes past 9 a.m.?
How many minutes is it before 12 noon, if 44 minutes ago
it was three times as many minutes past 9 a.m.? How do you get the answer, please help!!
- 1 decade agoFavorite Answer
difference between 9 am and 12 noon= 180 min
let x min ago was the time when 44 minutes ago it was three times as many minutes past 9 a.m.
so 44 min ago when time was x min to 12 noon time was 3x min past 9am
so total min in time interval 9 to 12 are 3x + 44 + x = 4x + 44
hence 4x + 44 = 180
so x=34 min
so time was 34 min before 12 noon, i.e., 11:26 when 44 min ago it was 3 times as min as many min past 9 am
- Nick JLv 41 decade ago
Convert all times into no. of minutes past midnight, so 9am = 540 and noon = 720.
Let x be the number of minutes before noon it is now,
so current time t = 720 - x.
44 minutes ago (t-44) it was 3x past 9am: t-44 = 540 + 3x.
No we have simultaneous equations to solve:
t = 720 - x
t = 584 + 3x
cancel out t's:
720 - x = 584 + 3x
136 = 4x
x = 34
So it is now 34 minutes before 12 noon.
- 1 decade ago
first u multiply 44 by three then u add 44 and divide it by 60
then u add the minutes to 9 o' clock i got the answer 11:56 so its 4 minutes till noon