![AM28](/avatars/3974.jpg)
AM28
26.08.2019 •
Mathematics
Aperson, who decided to go to weekend trip should not exceed 8 hours driving in a day. average speed of forward journey is 60 km/h. due to traffic in sundays, the return journey average speed is 50 km/h. how far can he select a picnic spot?
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Ответ:
Let the distance of the picnic be = x km.
Therefore time for forward journey = x / 60
Return journey = x / 50
The total trip should not exceed 8 hours.
Therefore: x / 60 + x / 50 <= 8. LCM = 300
Taking LCM and multiplying on both sides:
5x + 6x <= 8(300)
11x <= 2400
x <= 2400/11
x <= 218.18
The picnic spot must be less than or equal to 218.18 km.
Ответ:
18 ounces
Step-by-step explanation:
The expected mean is the average amount
Since the average amount is 18 ounces, we should expect 18 ounces