15 years from now Ravi's age will be 4 times his present age what is Ravi's present age​

Ravi’s present age will be 5.

Step-by-step explanation:

From the given, Let Ravi’s present age is taken as "a" years.  

After 15 years, his age = (a+15) years.  

By the given, it is identified that the age of Ravi after 15 years is equal to the 4 times of his present age.

Given,  

Then, it has been found that the present age of Ravi is 5 when his age after 15 years will be 4 times of his present age.  

step-by-step explanation:

here's what happens:

1) the graph of f   = x^2 is shifted 2 units to the right.

2) the resulting graph is reflected in the x-axis, so that the parabola now opens down.

3) this final result is transformed up by 5 units.

1; 35 is the ratio

step-by-step explanation: