Answer:
5/8
Explanation:
Let x represent the size of her garden
m represent Marigolds
p represents petunias
She planted M into 2/8 of x
and also planted p into 3/8 of x
Fraction of the garden that has M and p will be:
(2/8 of x) + (3/8 of x)
5/8 x
Hence, 5/8 of her garden has marigolds and petunias