Math(fractions)

Question

david had 60 fliers to post around town. Last wee, he posted 2/3 of them. This week, he posted 1/5 of the remaining fliers. How many fliers has he still not posted?

Answer 1

last week he posted 2/3 of 60 = 40 with 20 left

this week he posted 1/5 of 20 or 4

now there's 16 left not yet posted