gin9
02.12.2021 •
Mathematics
"Gina is writing an inequality to represent
the following situation:
The yellow hot air balloon is 50 feet above
the ground and is rising at a rate of 3 feet
per second. The red hot air balloon is
80 feet above the ground and is rising at a
rate of 2.5 feet per second. When will the
.
yellow hot air balloon be higher than the
red hot air balloon?
Gina writes part of the inequality:
50 + 3s 80 + 2.55
What symbol should Gina write in
the circle?
Solved
Show answers
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Ответ:
The drum capacity is 180 liters.
Step-by-step explanation:
Let the capacity of the drum be c. Then the contents of the drum at the beginning are (3/4)c, and
if 30 liters are drawn out, then the contents are (3/4)c - 30 liters = (7/12)c.
Here the LCD is 12, and so we have (9/12)c - (7/12)c = 30 liters, or
(2/12)c = 30 liters, or c = (12/2)(30 liters) = 180 liters
The drum capacity is 180 liters.