The answer is 30 flowers because if you add 15+15 you get 30 and to get 3.5 you add 2.5 + 1.0 = 3.5, hope this helps! im sorry if it doesn't
Answer: 22 1/2 flowers i think
Explanation:
it takes 2.5 hours to plant 15 and hes gonna work for 3.5 more hours so 15/2 =7.5 , 7.5+15=22.5
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