20% of 60k is 12k, 60k - 12k = 48k. So no, the claim isn't true for the most trivial of reasons.
You are technically correct though.
Mathematics is the one discipline where "close enough" isn't close enough. :)
20% of 60k is 12k, 60k - 12k = 48k. So no, the claim isn't true for the most trivial of reasons.