Final answer:
To maintain the 3:2 ratio of tulips to roses in a garden of 50 flowers, Jethro should plant 30 tulips, as calculated by the value of one part of the ratio multiplied by 3.
Step-by-step explanation:
The question requires solving a problem based on the concept of ratios. Jethro wants the ratio of tulips to roses to be 3 to 2 and the total number of flowers to be 50. To find how many tulips he should plant, we need to calculate the number of tulips that represent the '3' part in the 3:2 ratio.
First, add the parts of the ratio together: 3 (tulips) + 2 (roses) = 5 parts.
Then find the value of one part by dividing the total amount of flowers by the total number of parts: 50 flowers / 5 parts = 10 flowers per part.
Finally, multiply the value of one part by the number of parts for tulips to find the number of tulips: 10 flowers per part * 3 parts for tulips = 30 tulips.
Jethro should plant 30 tulips to maintain the desired ratio of tulips to roses in his garden of 50 flowers.