Question

Cat la suta reprezinta nr 25 din a)10 b)625 c)400 d)1000

Answer 1

25/10  =250/100=150%
25/625=1/25 = 4/100=4%
25/400= 25/4 * 1/100=6,25/100=6,25%
25/1000 = 25/10 * 1/100=2,5/100=2,5%

Answer 2

   
[tex]\displaystyle \\ a)~~~\frac{25}{10} \times 100 =\frac{5}{2} \times 100 = 2,5 \times 100 = 250\% \\ \\ b)~~~\frac{25}{625} \times 100 =\frac{1}{25} \times 100 = 0,04 \times 100 = 4\% \\ \\ c)~~~\frac{25}{400} \times 100 =\frac{1}{16} \times 100 = 0,0625 \times 100 = 6,25\% \\ \\ d)~~~\frac{25}{1000} \times 100 =\frac{1}{40} \times 100 = 0,025 \times 100 = 2,5\% [/tex]