jjircal18 Group Title how do i do this problem 7/20 =decimal number? 2 years ago 2 years ago

1. pfenn1

what is $\frac{7}{20}=7\div20=?$

2. pfenn1

Or you could multiply the fraction by 5/5.$\frac{7}{20} \times \frac55=\frac{35}{100}$

3. jjircal18

2.86 how did you get the 5/5

4. beeqay

What are you trying to do? Or what does the question ask?

5. pfenn1

I was multiplying the expression by 1. I chose 5/5 because I wanted the denominator to be 100. Because we know what the decimal of 35/100 is......0.35.

6. jjircal18

thanks i was divivding backwards , i havent had math in twenty years studing for placement test

7. pfenn1

Good luck with that. I know how you feel. I haven't taken math in almost 30 years.

8. jjircal18

9. jjircal18

how about this? all of the following are ways to right 25 percent of N except 0.25 N ,25n/100, 1/4 N ,25 N

10. pfenn1

Which one do you think?

11. jjircal18

25N?

12. pfenn1

Yep. That one shows 25 times N. The others are all equal to one another.$0.25 N = \frac{25N}{100}=\frac 14N$

13. jjircal18

thanks thats pretty good if you havent had math in 30 yrs!!!!

14. pfenn1

You're welcome.