Let length of train A = x Length of platform = 2x Speed = distance/time ⇒ 54 x 5/18 = (x + 2x)/12 ⇒ x = 60 m = length of train A Length of platform = 60 x 2 = 120m For train B, Speed = distance/time ⇒ (240 + 120)/18 x (18/5) ⇒ 72 km/hr
A product is sold at ₹720 after two successive discounts of 10% and 20%. Calculate the marked price of the product.
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