Question

in clasa sunt 33 de elevi.sa se afle numarul fetelor si al baietilor..stiind ca nr fetelor reprez 65%din nr baietilor

Answer 1

b+f=33; f=65/100*b; b+65/100*b=33; 100b+65b=3300; 165 b=3300; b=3300/165; b=20; => f=65/100*20;f=1300/100; f=13