Question

repede e urgentttttttt​

Answer 1

1. a,b dp cu 3,5

=> a=3k

b=5k

a+b=16=>3k+5k=16=>8k=16=>k=2

a=3k=>3*2=6

a=6

2. a,b ip cu 0,2;0,3

a=0,2k

b=0,3k

a+b=5

0,2k+0,3k=5=>0,5k=5=>k=10

a=0,2k=>0,2*10=2

a=2

3.

3m....12 zile

4m.....x zile

x=$\frac{4*12}{3}$=16 zile

4. nr prime: 1,2,3,5,7 => cazuri favorabile =5

cazuri posibile =8

$p=\frac{cazuri favorabile}{cazuri posibile}$=$\frac{5}{8}$=62,50%

5. $\frac{20}{100}*x=3=>20x=300=>x=\frac{300}{20}$=>x=15