Answer:
The answer is false or "impossible"
Step-by-step explanation:
Heres why I say this:
If the “average speed” in one hour make the car travel 50km, it means the speed could not be constant. So, it could be 90km/h during the first 30 minutes and 10km/h during the second 30 minutes. If this is the case, for example, in the next 12 minutes after the first hour, the car could be traveled 18km at 90km/h, completing 50 + 18 = 68km. The tricky word “average” makes it impossible to answer. Good try, but no cigar.
Answer:
36
Step-by-step explanation:
The answer is easy to find if we use the cross-multiplication method.
We know 7 students out of 10 picked apples, then 3 out of 10 picked bananas.
We know the number of people who picked apples.

We just have to isolate x, this way and solve the problem:

becomes

So, 36 students picked bananas as their favorite fruit.
Answer:
C. 3
Step-by-step explanation:
2/5 x = 6/5
Multiply each side by 5/2 to isolate x
5/2 * 2/5 x = 6/5 * 5/2
x = 6/2
x=3
Answer:
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Step-by-step explanation:
Given


Required
Determine the %decrease
First, we need to determine the amount paid



The percentage decrease is the calculated as follows:

In this case;


So; we have:





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<em> (Approximated)</em>
Given:
Elise is making punch for the party that requires 2 parts of fruit juice for every 5 parts of ginger ale.
To make the punch, she uses 18 ounces of fruit juice and 3 containers of ginger ale.
To find:
The number of ounces in each container of ginger ale.
Solution:
Let n be the number of ounces in each container of ginger ale.
According to the question, the ratio of fruit juice and ginger ale is 2:5. it means,




Divide both sides by 2.

So, ginger required for punch is 45 ounces.
Number of containers = 3
Number of ounces in each container of ginger ale = n
Number of ounces in 3 containers of ginger ale = 3n
Now,

Divide both sides by 3.

Therefore, 15 ounces are in each container of ginger ale.