Number of weeks required is 6.
The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.
Given:
Juliette buys a rosemary plant that is 12 cm and grows 1 cm per week (w).
Kimberly starts one from seed but the package says it will grow 2 cm per week.
Kimberly flower will be 2 cm in length in 1 week.
In week 2, height will be 4 cm
Continuing this way we get
In week 6 height will be 12 cm
Hence, juilette require 6 week to get the equal height of Juliette’s plant.
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