Classmate 2613

Juro didn't have a watch, so he asked a classmate for the exact time. Simon looked at the clock and said: "If my watch were 22 minutes late, it would be 11:54. But it's not that much because my watch doesn't miss; it goes 22 minutes ahead". What time was it when Juro asked?

Result

h = 12:38 Wrong answer

Step-by-step explanation:


x - 22/60 = 11+54/60
x + 22/60 = h

60x = 736
60h-60x = 22

Pivot: Row 1 ↔ Row 2
60h-60x = 22
60x = 736


x = 736/60 = 12.26666667
h = 22+60x/60 = 22+60 · 12.26666667/60 = 12.63333333

h = 379/30 ≈ 12.633333
x = 184/15 ≈ 12.266667

Our linear equations calculator calculates it.



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