1/7 *2 =2/7 take denominator with 1 over it and multiply by numerator
If the proportion of iris to roses in Nikki's garden is 2: 5, it means that for 25 roses: (2/5) = (10/25). Therefore to maintain the proportion by adding 20 roses: (2/5) = (18/45). The number of irises after the addition of roses will be 10 + 18 = 28 irises.
First, expand the terms inside the bracket you will get







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