Question

1. Prove that V5-13 is not a rational number.​

Answer 1

Answer:

Short Trick:

MP of the cooler = Rs 13200 × 100/88 × 100/75 = Rs 20000

∴ Required percentage = 2400/20000 × 100% = 12%

Detailed Solution:

Let marked price of the cooler be 100x

⇒ Vinay bought the cooler at = Rs 100x(1 – 25/100) = Rs 75x

⇒ Vinay sold the cooler at = Rs 75x(1 – 12/100) = Rs 66x

According to the question,

66x = 13200

⇒ x = 200