Lily present age now 17 years old.
The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.
Here, Unit means 'single entity', the fundamental constructing block. Usually, it is 1 in mathematics and science.
Thus, unit price of something is price of 1 thing.
Thus, suppose we're taking about price of mangoes, then unit price will denote the price of 1 mango.
We have been given that Rachel is now 11 years old. Five years ago, Lily was twice as old as Rachel.
We want to find the present age of lily.
Since five years ago rachel was 6, we know that Lily was twice as old as Rachel makes lily 12 years old.
For five years ago so 12 + 5 = 17.
Therefore, Lily is now 17 years old.
Learn more about the unitary method;
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