Answer is E. This is how I solved:
Given:
R(Roses): T(Tulips) = 3:2
T(Tulips):D(Daisies) = 4:5
Calculate: R(Rose): D(Daisies)
Since, Tulips is "common" between the ratios, but is in a different proportion, one needs to make it common in proportion as well. If we could multiply the ratio of R and T by 2 (that way the proportion of Tulips will be common in both the ratios), that would bring the commonality.
=> Multiplying R:T by 2 = 6:4
Now, Tulips are in the same proportion.
...
Given:
R(Roses): T(Tulips) = 3:2
T(Tulips):D(Daisies) = 4:5
Calculate: R(Rose): D(Daisies)
Since, Tulips is "common" between the ratios, but is in a different proportion, one needs to make it common in proportion as well. If we could multiply the ratio of R and T by 2 (that way the proportion of Tulips will be common in both the ratios), that would bring the commonality.
=> Multiplying R:T by 2 = 6:4
Now, Tulips are in the same proportion.
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