Final answer:
Tara has 24 grams of snakes left in the packet.
Step-by-step explanation:
Tara has a packet of snakes weighing 486 grams. She puts a total of 60 snakes into 10 party bags. Since each snake weighs 7.7 grams, we can find the total weight of the snakes she puts in the bags by multiplying the weight of each snake by the number of snakes. So, 7.7 grams * 60 snakes = 462 grams. To find the number of grams of snakes left in the packet, we subtract the weight in the bags from the initial weight: 486 grams - 462 grams = 24 grams.