Exactly how many minute is it before seven o'clock,if 40 minute ago it was three times as many minutes past two o'clock?

Question

Exactly how many minutes is it before seven o'clock, if 40 minutes ago it was three times as many minutes past two o'clock?

Answer 1

65 minutes before 7 o'clock.
The difference between 2 and 7 o'clock is 5 hours = 300 minutes.
The time is x minutes to 7 -> 300 - x
40 minutes ago it was 3*x minutes past 2 -> 3 * x = (300 - x) - 40
This gives: 4 * x = 260 -> x = 65 minutes.
The time is 65 minutes to 7 -> 5:55