Question

Se dau 3 numere a,b,c despre care se stiie că. a:b=4. c:b=2. a-c=8

Answer 1

a/b / c/b = 4/2 ⇒ a/c=2 ⇒ a=2c ⇒2c-c=8 ⇒ c=8
a=2c=16
b=a/4=4
S=4+16+8=28

Answer 2

a÷b ≈4
c÷b ≈2 ⇒b≈6⇒c≈2×6⇒c≈2×6⇒c≈12
a-c≈8⇒a-12≈8⇒a≈12+8⇒a≈20

a+b+c≈20+6+12≈38