math problem pless help?

Question

1. What is 9% of 30?

2. What is 25% of 312?

3. What percent of 9 is 3?

4. What percent of 3 is 9?

5. A car dealer makes an 8% commission on each car she sells. How much does she make on a $40,000 sale?

6. During a telephone survey, 320 people, or 25% of those called, said they were listening to the same station at the time of the call. How many people were called?

Answer 1

you should do your own homeowrk :P
all the best

Answer 2

1. here is how ot do this using inequalties. take 9 over 100 (= 9%) = X over 30. forget about the 100 for now. multiply the 9 by the 30 (this is known as cross multiplying because you ar multiplying the two numbers that form a cross) which is 270. now, since the 100 is the only number left divide by that, which is 2.7. basically, take the percent number over 100 = X over the amount. you can use this with almost anything to convert numbers (espacially in cooking) ask your math techer about inequalities (and maybe conversion factors) if you want more help) i hope this could have helped at leasta little bit

Answer 3

1. Multiply 30 by 0.09 (9%) = 2.7.
2. Multiply 312 by 0.25 (25%) = 78.
3. 3/9 divide tpo by bottom, you get 0.3333..now to get %, multiply by 100 = 33.33...%.
4. It would be written as 9/3 so, top divided by botton (9 divided by 3 = 3)...to get %, multiply 3 by 100 = 300%.
5. $40,000 x 0.08 (8%) = $3,200.
6. if 25% = 320, than there were 1280 people called. It's a ratio....(25/100 = 320/x), so cross multiply (100 x 320 = 32000).
32,000 divided by 25 = 1,280 total calls
Hope this helped.

Answer 4

1. 1% or 30 is .3 so 9% of 30 is .3 x 9 which is 2.7%

2. 10%= 31.2 5% = 15. 6 so 31.2 + 31.2 = 62.4 + 15.6 = 78%

3. 33.3333333....%

4. 300%

Answer 5

2.7
78
0.27

Ah ! 9 % of 3 is 3 % of 9,
129 % of 14987 equals 12987 % of 129

Answer 6

I only know the answer to number 3. The answer is %33.3 repeating.