RRB Junior Engineer Stage 1 Model Papers 2

Question : 2 of 99

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If 21 is added to a number, it becomes 7 less than thrice of the number. Then the number is

Solution:

If the number be x, then

x + 21 = 3x – 7

⇒ 3x – x = 21 + 7

⇒ 2x = 28

⇒ x = 14

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