Answer:
The answer is 4.
Explanation:
Olives garden has area=
Each watermelon plants she want to grow require an area=

Hence, the number of watermelon plants she can grow in that garden is given by:
Number of watermelon plants she can grow= (Total area)/( Area 1 watermelon plant requires)
Hence, Number of watermelon plants she can grow=

Hence, she can grow 4 watermelon plants in Olives garden.