Question

RICK IS 3 YEARS OLDER THAN ELLIE . HECTOR IS 13 FRED IS 4 YEARS YOUNGER THAN HECTOR AND 2 YEARS YOUNGER THAN ELLIE . HOW OLD IS RICK

Answer 1

Step-by-step explanation:

H=hector's age; S=sister's age

H=S+22yrs

H+5=3(S+5) Substitute for H.

S+22+5=3S+15

S+27=3S+15 Subtract 15 from each side.

S+12=3S Subtract S from each side.

12=2S Divide each side by 2.

6=S ANSWER 1: Sister is 6 years old

H=S+22yrs=6yrs+22yrs=28 yrs ANSWER 2: Hector is 28 years old.

CHECK:

H+5=3(S+5)

28yrs+5yrs=3(6yrs+5yrs)

33yrs=3(11yrs)

33yrs=33yrs

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