Of the 100 flowers in a garden, 3/4 are either roses or tulips and 3/25 are either lilies or tulips. If there is at least one rose, at least one tulip, and at least one lily in the garden, how many of the flowers are tulips?
(1) The ratio of the number of roses to the number of tulips is less than 13 to 2.
(2) 13/20 of the flowers in the garden are either roses or lilies.
Let R be the numbers of Roses, T be the number of Tulips, L be the number of Lilies.
Of the 100 flowers, R + T = 75, L + T = 12. And there is at least one rose, at least one tulip, and at least one lily in the garden, so
Max of L = 11, max of T = 11, and max of R = 74, min of R=64
(1) R/T < 13/2. Together with R + T = 75, we can conclude that T > 10.
As T>10 and <=11, T can only be 11. Sufficient
(2) R + L = 65, together with R + T = 75, L + T = 12, we also can calculate T. Sufficient
I choose D. EACH statement ALONE is sufficient to answer the question asked