(ii) If the speed of a car is decreased by 12 km/h, it takes 1 hour more to cover a
distance of 240 km. Find the original spe

2 thoughts on “(ii) If the speed of a car is decreased by 12 km/h, it takes 1 hour more to cover a<br />distance of 240 km. Find the original spe”

1. Answer:

   .original speed of the car is 48 km/hr

   Step-by-step explanation:

   Let s & t be the original speed & time taken.

   So s×t = 240

   t = 240/s

   Also (s – 8)(t+1) = 240

   st+s-8t-8 = 240

   Applying the value of st & t in above equation

   240+s-8×240/s-8 = 240

   s -1920/s = 8

   s²-1920 = 8s

   s²-8s-1920 = 0

   (s-48)(s+40) = 0

   So s = 48 or -40

   Since s can not be negative, s = 48

   So original speed of the car is 48 km/hr

   I hope it’s help you

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2. Answer:

   ₹15625 pr 2/1/4 wrs ke liye 16% warsik dr se jb byaj sayojit hota h

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