Answer: 4 of the oysters would be expected to have lime-green pearls.
Explanation:
To solve the problem, we can use proportions. The proportion of lime green pearls to the total number of pearls in Mrs. Rasul's collection is equal to the proportion of lime green pearls to the total number of pearls in 35 oysters.
Let x be the number of lime green pearls in 35 oysters. Then, we can set up the proportion:
4/20 = x/(8 + 3 + 2 + 4 + x)
Simplifying this equation, we get:
4(8 + 3 + 2 + 4 + x) = 20x
17x = 68
x = 4