The surface area is <span>153.86
</span>
Answer:
son's present age = 30
father's present age=60
Step-by-step explanation:
his son's present age = x years
his father's present age = 2x years
before 20 years his son's age=(x-20) years
before 20 years father's age=(2x-20) years4(x-20)=(2x-20)
4x-80=2x-20
4x-2x=80-20
2x=60
x=30
Going by what I was taught in chemistry, there would only be 1.
Answer:
add 25 each time and count how many times you add it on
Step-by-step explanation:
and that will be your answer
just do what it said and you'll get the answer
