Thursday

October 23, 2014

October 23, 2014

Posted by **lucy** on Tuesday, May 10, 2011 at 4:30pm.

1. 30 % of 90

2. 70 is 10 % of what?

3. 4/10 of 30

4. change 2/8 to a percent

Please help me with these formulas! Thanks!

- math -
**Ms. Sue**, Tuesday, May 10, 2011 at 4:45pmThe word "of" means multiply.

Change the percent to a decimal.

30% * 90 = 0.3 * 90 = 27

0.1 x = 70

x = 70/0.1 = 700

I'll be glad to check your answers for the other problems.

- math -
**lucy**, Tuesday, May 10, 2011 at 5:08pmso.. 3. 4/10 of 30=

4/10 x 30/1=12

and 4. 2/8 to % would be 8 into 2 which equals .25= 25 %

- math -
**Ms. Sue**, Tuesday, May 10, 2011 at 5:12pmBoth are right! :-)

**Answer this Question**

**Related Questions**

Chemistry - 1.What is the formula for finding percent water hydrates? 2. And ...

Chemistry - I need some help with some of these questions: The action of ...

Chemistry - I need some help with some of these questions: The action of ...

chemistry - 1.to calculate the percent by massof an element in a known compound...

math - what is x? x + 2 11/14 = 5 13/21 basically, i want to know the formula to...

math - A bond has an average return of 6.8 percent and a standard deviation of 4...

ENVIRO SCIENCE - 1.Between 1950 and 2004, the world population increased ...

MATH,ALGEBRA - My questions are: why are variables useful in algebra? Also, what...

Math - For each geometric series, calculate t6 and S6. a) 6 + 30 + 150 ... So I'...

Math for Steve or someone good at math - 1. Find the percent of change when the ...