Question

scrieti sub forma de raport procentual urmatoarele rapoarte:

A) 9/10
B) 2/5
C) 5/4
D) 49/140
E) 7/8
F) 11/275
G) 0,25
H) 0,7
I) 0,123
J) 12/75

Answer 1

Salut,

a) 9/10 (amplific cu 10) = 90/100 → 90%.

b) 2/5 (amplific cu 20) = 40/100 → 40%.

c) 49/140 (amplific cu 10) = 490/1400 (simplific cu 14) = 35/100 = 35%.

d) 7/8 (amplific cu 12,5) = 87,5/100 = 87,5%.

e) 11/275 (amplific cu 100) = 1100/27500 (simplific cu 275) = 4/100 = 4%.

f) 0,25 (amplific cu 100) = 25/100 = 25%.

g) 0,7 (amplific cu 100) = 70/100 = 70%.

h) 0,123 (amplific cu 100) = 12,3/100 = 12,3%.

i)12/75 (amplific cu 100) = 1200/7500 (simplific cu 75) = 16/100 = 16%.


Succes! :3

Answer 2

[tex] \frac{9}{10}= \frac{9*10}{10*10}= \frac{90}{100}=90 \\ \\ \frac{2}{5}= \frac{2*20}{5*20} = \frac{80}{100}=80\\ \\ \frac{5}{4} = \frac{5*25}{4*25}= \frac{125}{100} =125 \\ \\ \frac{49}{140}= \frac{ 7*7}{7*20} = \frac{7}{20}= \frac{7*5}{20*5} = \frac{35}{100} = 35\\ \\ \frac{7}{8} = \frac{7*12,5}{8*12,5}= \frac{87,5}{100} = 87,5\\ \\ \frac{11}{275} = 0,04 = \frac{4}{100} = 4 \\ \\ 0,25= \frac{25}{100}= 25 \\ \\ 0,7 = \frac{7}{10} = \frac{7*10}{10*10} = \frac{70}{100} = 70 \\ \\ 0,123 = \frac{123}{1000} = \frac{12,3*10}{100*10} = \frac{12,3}{100} = 12,3 \\ \\ \frac{12}{75} = \frac{3*4}{3*25} = \frac{4}{25} = \frac{4*4}{25*4} = \frac{16}{100} = 16 [/tex]