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Question

Mark (✓) against the correct answer
If 35% of a number added to 39 is the number itself, the number is

(a) 60
(b) 65
(c) 75
(d) 70


Solution

(a) 60
Let the number be x.
According to question, we have:
(35% of x ) + 39 = x
35100×x+39=x
7x20+39=x
x-7x20=39
20x-7x20=39
13x20=39
x = 39×2013 = 60
Hence, the required number is 60.

Mathematics
RS Aggarwal (2017)
Standard VII

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