What is the Difference in Ratio of Speed? If

Two houses A and B run at a speed of 3:2 ratio in the first lap: during the second lap the ration differs by 4:7 during the third lap the ratio differs by 8:9. What is the difference in ratio of speed altogether between the two horses.

  1. 2
  2. 3
  3. 1
  4. 4
Monis Rasool Professor Asked on 22nd June 2015 in Maths.
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1 Answer(s)

Answer: (2) 3
Let be the speed of A  and B in first lap = 3X and 2X
The speed of A and B in second lap = 4X and 7X
The speed of A and B in third lap = 8X and 9X
The total speed of A horse = 3X + 4X + 8X = 15X
And the total speed of B  = 2X + 7X + 9X  = 18X

The difference between two A and B =  18X – 15X = 3X
Hence, the answer is (2) 3.

Anurag Mishra Professor Answered on 26th June 2015.
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