Given:
y is proportional to x.
y=10 and x=8.
To find:
The constant of proportionality and the equation for the proportional relationship.
Solution:
y is proportional to x.
...(i)
Where, k is the constant of proportionality.
Putting y=10 and x=8, we get
Putting in (i), we get
Therefore, the contestant of proportionality is and the equation for the proportional relationship is
.
Answer: The number is 12.
Step-by-step explanation:
Since we have given that
Sum of two digits = 12
Let the one's digit be 'x'
Let the ten's digit be '12-x'
So, Original number would be
If 16 is added to the number, then one of the digit is four times the value of the other.
According to question, we get that
so, the one's digit be 'x'.
Let the ten's digit be '4x'.
so, New number would be
According to question, it becomes,
So, the number would be
Hence, the number is 12.
