Question

Malachy was thinking of a number. Malachy adds 2 to it, then doubles it and gets an answer of 99.8. What was the original number?

Answer 1

47.9

Explanation:

x + 2 = y

y × 2 = 99.8

99.8 ÷ 2 = 49.9

y = 49.9

49.9 - 2 = 47.9

x = 47.9