Question

Va rog măcar un ex de aici.Dau coroana

Answer 1

Răspuns:

5.a)

10%*150=10/100*150=15

12%*125=12/100*125=15

5%*240=5/100*240=12

15+15-12=18

b) 35%*160=35/100*160=7*8=56

24%*175=24/100*175=24/4*7=6*7=42

85%*180=85/100*180=85/25*45=17*9=153

56+42+153=251

c) 45%*220=45/100*220=9/20*220=9*11=99

36%*150=36/100*150=9/25*150=9*6=54

55%*360=55/100*360=11/20*360=11*18=198

99+54+198=351

6. 1/6*60=10 bomboane

10+2=12 bomboane a luat Maria

60-12=48 bomboane au ramas

48:2=24 bomboane

24+1=25 bomboane a luat Luca

60-(12+25)=60-37=23 bomboane au ramas in cutie

7. Notam cu "x" tot drumul

3/5*x+36=x

(3*x)/5+36/1=x/1

Aducem la acelasi numitor comun 5.

3x+36*5=5*x

5x-3x=36*5

2x=180

x=180:2

x=90 km are tot drumul