Answer:
Number of Black grapes = 32
Explanation:
This is a problem related to ratio and proportion. We are given the number of Green Grapes and the ration of Green Grapes to the Black Grapes
The ratio is 3:4
This means

Now assume that the number of Black Grapes = x
Given that
=24
Substituting these values in



Hence the number of Black Grapes are 32