350 is 70% of what number?
A) 500
B) 420
C) 245
D) 280
What percent of 64 is 24?
A) 267%
B) 62.5%
C) 40%
D) 37.5%
What percent of $6.50 is $2.60?
A) 25%
B) 40%
C) 90%
D) 250%
20% of 140 is what number?
A) 280
B) 120
C) 28
D) 12
I am kind of confused on what to do so if one of you guys could help that would be good!!!!!!!!!!!! thanks
wait what????????????????
A. 500
B. 37.5%
C. 40%
D. 28
That's what I got when I completed it, Your welcome.
To find the answers to these questions, we will use the concept of percentages. Here are the steps to solve each problem:
1. "350 is 70% of what number?"
To find the number, we can use the formula:
(Number) = (Percentage) x (Total)
Let's substitute the values given:
(Number) = 70% x (Total)
(Number) = 0.7 x (Total)
Now, we can rearrange the formula to solve for the unknown number:
Total = (Number) / (0.7)
Total = 350 / 0.7
Total = 500
So, the answer is A) 500.
2. "What percent of 64 is 24?"
To find the percentage, we can use the formula:
(Percentage) = (Part) / (Total) * 100
Let's substitute the values given:
(Percentage) = (24 / 64) * 100
(Percentage) = 0.375 * 100
(Percentage) = 37.5%
So, the answer is D) 37.5%.
3. "What percent of $6.50 is $2.60?"
To find the percentage, we can use the formula:
(Percentage) = (Part) / (Total) * 100
Let's substitute the values given:
(Percentage) = (2.60 / 6.50) * 100
(Percentage) = 0.4 * 100
(Percentage) = 40%
So, the answer is B) 40%.
4. "20% of 140 is what number?"
To find the number, we can use the formula:
(Number) = (Percentage) x (Total)
Let's substitute the values given:
(Number) = 20% x 140
(Number) = 0.2 x 140
(Number) = 28
So, the answer is C) 28.
Remember, the key to solving percentage problems is understanding the relationship between the part, the percentage, and the total. It's helpful to convert the percentage to a decimal (by dividing by 100) in order to make calculations easier.
I wish authors would phrase those kind of questions in a more direct way.
e.g.
350 is 70% of what number?
-----> 70% of what number is 350 ----> .7x = 350
x = 350/.7 = 500
check: .7(500) = 350
What percent of 64 is 24? ----> (x/100)(64) = 24
x = (24/64)(100)%
The next one just like the above
last one:
20% of 140 is what number?
---> what is 20% of 140
= .2(140) = ....