If x% of 280 is equal to the 15% of 240 + 20% of 310, then the value of x is:
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 35.
⇒ x% of 280 = 15% of 240 + 20% of 310
⇒ x/100 × 280 = 15/100 × 240 + 20/100 × 310
⇒ 14x/5 = 36 + 62
⇒ 14x = 180 + 310
⇒ x = 490/14
⇒ x = 35