Question

What is the approximate value that should come in place of question mark (?) in the following questions? (You are not needed to calculate the exact value)

66.05 `xx` 17.95 – 38.99 `xx` 18.12 = (60+?) `xx` 6

A 30 Correct Answer Incorrect Answer
B 40 Correct Answer Incorrect Answer
C 20 Correct Answer Incorrect Answer
D 25 Correct Answer Incorrect Answer
E 35 Correct Answer Incorrect Answer

Solution

66.05`xx` 17.95 – 38.99`xx` 18.12 = (60+?)`xx` 6 66`xx` 18 – 39`xx` 18 = (60+?)`xx` 6 18 (66 -39) = (60+?)`xx` 6 18 `xx` 27 = (60+?)`xx` 6 81 = 60 + ? ? = 81 - 60 = 21 = Approx 20

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