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A horse and two cows together cost Rs.680. If a horse cost Rs.80 more than a cow then the ratio of cost of horse and cow is


A) 7 : 5

B) 5 : 7

C) 8 : 9

D) 9 : 8

Correct Answer:
A) 7 : 5

Description for Correct answer:

Let the cost of a horse be Rs.x.
Let the cost of two cows be Rs.2y

x + 27 = Rs.680.... (1)
x - y =Rs.80 ... (2)
.................................

3y = Rs. 600

So y = Rs.200
x - 200 = 80
x = 280
x : y = 280 : 200
= 7 : 5


Part of solved TNPSC Question Paper-2014 questions and answers : Exams >> TNPSC >> TNPSC Question Paper-2014




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