conversations.from: human
conversations.value: Find a solution for this math problem: Solomon bought 20 marbles from his friend Johanna and added them to a store that had 50. If his father also gave him 2/5 times as many marbles as he bought from Johanna, and each marble weighs 2kgs, calculate the total weight of marbles Solomon has in the store.
conversations.from: assistant
conversations.value: After buying twenty marbles from his friend Johanna, Solomon had 20+50 = 70 marbles.
  Solomon's father gave him 2/5*20 = 8 more marbles.
  Adding Johanna's and Solomon's marbles, he has a total of 8+70 = 78 marbles.
  If each marble weigh 2 kgs, the total weight of marbles Solomon has in store is 78 * 2 kgs = 156 kgs