Question

Ajutati-ma!!! Rezolvati asta plzzz!!! MULTUMESC anticipat!!!

Answer 1

1.a)
x=$\frac{2*15}{6}= \frac{30}{6}= 5$
b)(-3)+(-7)+12=-3-7+12=-10+12=2

2
.3 caiete.......18lei
 5 caiete.......x lei
x=$\frac{5*18}{3}= \frac{90}{3}=30$

b)12 muncitori.....6 zile
   8 muncitori.....x zile
x=$\frac{8*6}{12}= \frac{48}{12}=4$

3.a)
40% din 120
$\frac{40}{100}*120= \frac{4800}{100}=48$

b)
30% din elevi sunt fete
f+b=20
f=$\frac{30}{100}*20= \frac{600}{100}=6$ fete
6+b=20
b=20-6
b=14