If 5/9 of a tank can be filled in 2 minutes, how many minutes will it take to fill the whole tank ? A) 2.4 minutes B) 2.8 minute
1 answer:
Answer:
D.
Step-by-step explanation:
Set this up as a ratio with #parts of tank on top and #minutes on the bottom and then solve it as a proportion with x being the unknown number of minutes in the second ratio.
Notice the 1 in the numerator of the second ratio. This is because a whole tank is represented by 9/9 which is the same thing as 1.
Cross multiply to solve for x:
To solve for x we will multiply both sides by 9/5:
9/5 and 5/9 cancel each other out when multiplied leaving simply "x" on the left. And multiplying on the right:
which divides to 3.6 minutes
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<h3>Inequalities</h3>Inequalities is a mathematic expression that do not present equalitiy between both sides. It is represented by symbols: <, ≤, > and ≥.
For solving this exercise, firstly, you should solve the inequalities identified by letters: H, W, M, Y and C. After that, you should relate yours anwers with the options given for the exercise.
- Inequality H
Therefore, you should connect H with x<1.
- Inequality W
Therefore, you should connect W with x>-2.
- Inequality M
Therefore, you should connect M with x≤-12.
- Inequality Y
Therefore, you should connect Y with x≥9.
- Inequality C
Therefore, you should connect C with x≥7.
Thus, the sequence is:
M -
C -
Y-
H-
W-
Read more about inequalities here.