On a certain date, Pakistan has a success rate of 60% against India in all the ODI's played between the two countries. The lost the next 30 ODI's. In a row to India and their success rate comes down to 30%. The total number of ODI's played between the two countries is :

Answer: Option C

Let a total of 5x match is played between Pakistan and India. Pakistan won 3x matches and India won 2x matches
According to the question,
But now India won 30 matches in a row and hence India's success percentage increase to 70%.
Now, Total match = 5x + 30
(2x + 30) = (5x + 30) × $$\frac{70}{100}$$
20x + 300 = 35x + 210
15x = 90
x = 6
So, total match :
= 5x + 30
= 5 × 6 + 30
= 60 matches