Question

If 25% of a number is added to 78, then the result is the same number. 75% of the same number is:

• A. 108
• B. 48
• C. 98
• D. 78

Answer 1

Answer:

D. 78

Let the unknown number be X

According to the question,

78 + 25/100 × X = X

7800 + 25X = 100X

100X - 25X = 7800

75X = 7800

X = 7800/75 = 104

75% of the same number is

75% × 104

= 75/100 × 104

= 78