Answer: X=14
Step-by-step explanation:
In 16years, Ben will be 3 times as old as he is right now. How old is he right now?
2 answers:
Answer:
8 years old is he right now.
Step-by-step explanation:
Let the present age of Ben be x.
As per the statement:
After 16 years.
Age of Ben will be = x + 16
In 16 years, Ben will be 3 times as old as he is right now.
⇒
Subtract x from both sides we have;
Divide both sides by 2 we have;
8 = x
or
x = 8 years
Therefore, 8 years old is he right now.
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Answer:
12
Step-by-step explanation:
In this question, there are two variables: the number of mangoes(y) bought and the number of oranges bought(x).
Let's say the man have z money, mangoes price is z and the oranges price is
z. The equation for money and number of mangoes and oranges will be:
money = mango price * mangoes bought + orange price * orange bought
z= z * x +
z *y
1= x +
y
-y=
x -1
y= -1.5x + 30
y= 30 - 1.5x
If he want equal number of mango and orange, that mean y=x. The calculation will be:
y= 30 - 1.5x
x= 30 - 1.5x
x+ 1.5x = 30
2.5x= 30
x= = 12