a girl age is 21 year old and her brother is a third her age.When the girl is 36,what will be the age of her brother?
2 answers:
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So we know if there are 5 groups/dozens of Monarch butterflies, there are 2 groups/dozens of Queen butterflies. In other words, there are 5 Monarch butterflies for every 2 Queen butterflies.
Then we can turn that into an equation.
From the last equation we wrote we can see that the total number of butterflies in the farm is
.
When we compare the Queen butterflies to total butterflies, we get
The ratio of Queen butterflies to total butterflies is 2:7.
Then we can turn that into an equation.
From the last equation we wrote we can see that the total number of butterflies in the farm is
When we compare the Queen butterflies to total butterflies, we get
The ratio of Queen butterflies to total butterflies is 2:7.