how many minutes - 2?
Algebra
Level
3
How many minutes is it until six o’clock if fifty minutes ago it was four times as many minutes past three o’clock?
46
16
36
26
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1 solution
There are 180 minutes between 3 o'clock and 6 o'clock.
Call x 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 minuted past 3 o'clock.
Using the 4 times as many minutes past three o'clock bit we can form the equation
130 - x = 4x and solve it
130 = 5x
x = 26
so it is 26 minutes.