Answer:
Sally is 63
Step-by-step explanation:
Represent Sally's age by x and Sam's by y.
Then x = 3y and x + y = 84.
Substituting 3y for x in the second equation, we get:
3y + y = 84, or 4y = 84, or y = 21. Since Sally is 3 times as old as Sam, we multiply 21 by 3: Sally's age is 3(21 years) = 63 years
I believe it is the last one y>-1
Answer:
0 if I'm correct, it's long but it's still 0
Step-by-step explanation:
.
Answer:
223
Step-by-step explanation:
368 divided by 3= 123
123+100= 223
