Question

if 30-20=40, 20-15=20, then 50-30=?​

Answer 1

Explanation:

if 30-20=40, 20-15=20, then 50-30=33.12

Answer 2

Answer:

30-20 = 10, 10×4 = 40.

20-15 = 5, 5×4 = 20.

50-30 = 20, 20×4 = 80.

Therefore, 50-30 = 80.

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