Answer:
32
Step-by-step explanation:
Suppose Alvin is x years old. Then Elga is x+15 years old.
x+x+15=49
2x=34
x=17
17+15=32
Answer:
1%
Step-by-step explanation:
I assume since it’s .9% it’s less then 1%
N=8 is the correct answer
Answer:
3.93258426966
Step-by-step explanation:
To 1 d.p = 3.9