Question

When 20% of a number is added to 36 then the resultant number is 200% of the actual number. Then find 40% of actual number.

• A. 10
• B. 8
• C. 12
• D. 6

Answer 1

Answer:

B. 8

Let the actual number be x ⇒ 20% of x + 36 = 200% of x ⇒ (20/100) × x + 36 = (200/100) × x ⇒ x/5 + 36 = 2x ⇒ 36 = 2x – x/5 ⇒ 9x/5 = 36 ⇒ x = 20 40% of x ⇒ (40/100) × 20 = 8