(Ex 6.2 #6) Son's age is one-third of mother's, father is 6 years older than mother, sum of ages $\le$ 90. The father's

Question

(Ex 6.2 #6) Son's age is one-third of mother's, father is 6 years older than mother, sum of ages $\le$ 90. The father's age $f$ satisfies...

Accepted Answer

$f \le 42$

Answer

$f \ge 42$

Answer

$f = 36$

Answer

$f \le 90$

(Ex 6.2 #6) Son's age is one-third of mother's, father is 6 years older than mother, sum of ages ≤\le≤ 90. The father's age fff satisfies...