Puzzel to puzzel you
Algebra
Level
3
Fifty minutes ago if it was four times as many minutes past three o'clock how many minutes it is until six o'clock. The answer should be in minutes.
The answer is 26.
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1 solution
There are 180 minutes between 3 o'clock and 6 o'clock.
Let, x be the number of minutes to 6 o'clock.
Then, it is 180 - x minutes past 3 o'clock and 50 minutes ago, it was 130 - x minutes past 3 o'clock.
as 4 times as many minutes past three o'clock is the time till 6,
130 - x = 4x.
130 = 5x.
x = 26 minutes.