Question

Suma a doua numere naturale este 306, iar diferenta lor este un sfert din numarul mic. Afla numerele

Answer 1

a+b=306;⇒a-b=a/4⇒b=a-a/4⇒b=4a/4-a/4⇒b=3a/4;⇒a+3a/4=306⇒

4a/4+3a/4=306⇒
7a/4=306⇒
a=4·306/7⇒
a=174,85;⇒


b=306-a=

b=131,15;

Answer 2

a+b=306
a-b=a/4
b=a-a/4=b=4a/4-a/4=b=3a/4
a+3a/4=306
4a/4+3a/4=306
7a/4=306
a=4×306/7
a=174,85
b=131,14.