Question

Which number should be subtracted from 12, 16 and 21so, that resultant numbers

are in continued proportion​

Answer 1

Step-by-step explanation:

Let the number to be subtracted be x.

∴ (12 – x), (16 – x) and (21 – x) are in continued proportion.

∴ 84 – 4x = 80 – 5x ∴ 5x – 4x = 80 – 84

∴ x = -4

∴ -4 should be subtracted from 12,16 and 21 so that the resultant numbers in continued proportion