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kirill [66]
2 years ago
5

How many minutes is it before 12 noon if 68 minutes ago it was three times as many minutes past 10 a.m.?​

Mathematics
1 answer:
umka21 [38]2 years ago
7 0
If 68 minutes ago it (then) was three times as many minutes past 10 am (now)

x + 68 = 3 ×
×
(120 - x) →
→
x = 73 min
… if 68 minutes ago it (now) was three times as many minutes past 10 am (then)

x = 3 ×
×
[120 - (x + 68)] →
→
x = 39 min
… if 68 minutes ago it (then) was three times as many minutes past 10 am (then)

x + 68 = 3 ×
×
[120 - (x + 68)] →
→
x = 22 min
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