J = Justin's age
S = Sam's age
Justin is 3 years older then Sam mean:
J = S + 3
Justin’s age in 2 years will be twice what Sam’s age was 3 years ago mean:
J + 2 = 2 ( S - 3 )
Replace J = S + 3 in this equation.
S + 3 + 2 = 2 * S - 2 * 3
S + 5 = 2 S - 6 Subtract 5 to both sides
S + 5 - 5 = 2 S - 6 - 5
S = 2 S - 11 Add 11 to both sides
S + 11 = 2 S - 11 + 11
S + 11 = 2 S Subtracr S to both sides
S + 11 - S = 2 S - S
11 = S
S = 11 yrs
J = S + 3 = 11 + 3 = 14 yrs
Justin is 3 years older then Sam, and Justin’s age in 2 years will be twice what Sam’s age was 3 years ago. Find their present ages.
i got 14 and 17 but the answer is wrong
1 answer
1 answer