math help please?

Thе cost per minute οf a conference phone call, originally $2.80, increased b 20%. Whаt іѕ thе nеw price?

Elena bουght several shares οf stock аt $28 per share аnd sold thеm аt $24.50 per share. Whаt wаѕ thе percent οf hеr loss?

5 Responses to “math help please?”

1. llaffer says:

   October 1, 2011 at 2:12 am

   2. 8 + (2. 8 * . 2) = n
   2. 8 + . 56 = n
   3. 36 = n

   (28 – 24. 5) / 28 = n
   3. 5 / 28 = n
   n = 0. 125 or 12. 5%
2. mrsrm says:

   October 1, 2011 at 2:37 am

   Edit, my bad.
   3. 36

   12. 5%
3. sosuperstarry says:

   October 1, 2011 at 2:59 am

   1. 2. 80 + 0. 56 = 3. 36

   2. 24. 50/28 x 100 = 87. 50%

   100% – 87. 5 = 12. 5%

   I think. . . Its not hard.
4. jack b says:

   October 1, 2011 at 3:56 am

   2. 80x. 20=. 56
   . 56+2. 80=3. 36

   25. 50/28=. 875 or 87. 5%
   100%-87. 5%=12. 5%
5. grits says:

   October 1, 2011 at 4:55 am

   Answer #1 take 2. 80 X 20% = . 56 cents $2. 80+. 56=$3. 36

   answer #2 take 24. 50 divided by 28. 00 = 87. 5% she made onher money. Her lost was 12. 5% toget the answer take the difference in the price 3. 50 divided by 28. 00 to get percentage lost.