Answer:
Grapes: 7/15 pound. Cherries: 1/6 pound.
Explanation:
The total weight of the fruits is 7/10 of a pound. The weight of the grapes is 2/3 of the total weight. Therefore, the weight of the grapes is 2/3 * 7/10 = 14/30 = 7/15 of a pound. The weight of the cherries is 7/10 - 7/15 = 1/6 of a pound.