I have 3 Math Questions for all Math Whiz's!?

Question

1. Find 7¾% sales tax on a purchase of $250.

2. Find the rate of commission if the sale is $1,000 and the commission is $50.

3.What percent of the first fifty counting numbers (1-50) are even?


Please Help! ASAP Love To Ya'll!

Answer 1

1. $19.38 (rounding 19.375 up)
2. 5%
3. 50% (as long as you don't count zero)

Answer 2

Sales tax of 7¾% on a purchase of $250:
-- 250 / 100 = 2.5
-- 2.5 * 7.75 = 19.375
-- = 19.375

Rate of Commission, if commission is $50 and sale is $1000
--- 50 * 100 = 5000
--- 5000 / 1000 = 5
--- = 5 %

Percent of even numbers counting from 1 to 50
---- 50%
---- Because till 50 every second re-occuring number is even.

---- There is a method behind this to find the answer.

Example: Finding even number from 8 to 99.
1. Now if the starting number is even then take the nearest down odd number to it. That will be -1 to any starting even number. If it's odd then leave it as it is.
Therefore:: 8 - 1 = 7.

2. Now subtract the starting number to the ending number.
Therefore:: 99 - 7 = 92

3. Now divide 92 by 2, because every second re-occuring number is even.
Therefore:: 92 / 2 = 46.

So there are in all 46 even numbers.

4. Example: 3 to 77. [77 - 3 = 74], Now, [74 / 2 = 37]

Answer 3

Maybe someone should tell you how to solve these instead of just giving you the answers:

1. Convert the 7 and 3/4% to a decimal (which would be 0.0775)
Then multiply this by the total price $250.
0.0775 * 250= 19.38

2. This one can be solved with an algebra equation. You know
that 1,000x=50

Therefore, 50 divided by 1,000 equals x.

x= 0.05 which is 5%

3. You know that half of them are even which is 25. So what
percentage of 50 equals 25? same as above:

50x= 25 therefore 25 divided by 50= x

x= 0.5 or 50%

Hope this helps and good luck with math! Are you in algebra or what class is this for? What grade?

Answer 4

Just in case you are cheating on your math homework, here is how to find the answers. All you have to do is plug them into your calculator:

1. 0.0775 X $250. 73/4 is 7.75% wich is 0.0775

2. 1000 divided by 10 is 100, so 50 divided by 10 is 5. Can you find what percent 5 is of 100? That is the answer. (5%)

3. Even numbers are divisible by 2. 2,4,6,8,10....50. if there are 5 evens in 10, how many are there in 50? (25) 25 is what percent of 50?

Good luck.

Answer 5

1) 7 3/4 % sales tax = 250 x .0775

2) 5% 1000 x .05 = 50

3) 50 % of all numbers are even.

Cheers!

Answer 6

1. The sales tax is $19.38
2. Comission is 5%
3. 50%

This is for your business class, right?

Answer 7

$19.375
5 percent commission
half 50 percent