Marcus had 18/2 = <<18/2=9>>9 pebbles left.

After Freddy gave him more, he has 9 + 30 = <<9+30=39>>39 pebbles.

# Answer

39
Question:
Marcus had 18 pebbles. He skipped half of them across the lake, but Freddy gave him another 30 pebbles. How many pebbles does Marcus have now?
Answer:
Let's think step by step.

user
39
Marcus had 18 pebbles. He skipped half of them across the lake, but Freddy gave him another 30 pebbles. How many pebbles does Marcus have now?
train