What was the ratio of Gold-Silver coins in the Shaka-Kshtrapa period ?

The correct answer is (b) 1:25.

The Shaka-Kshtrapa dynasty was a dynasty of Indo-Scythian rulers who ruled over parts of the Indian subcontinent from the 2nd century BCE to the 4th century CE. They were known for their use of gold and silver coins, and the ratio of gold to silver coins in their currency was 1:25.

Option (a) is incorrect because the ratio of gold to silver coins in the Shaka-Kshtrapa period was 1:25, not 1:20.

Option (c) is incorrect because the ratio of gold to silver coins in the Shaka-Kshtrapa period was 1:25, not 1:35.

Option (d) is incorrect because the ratio of gold to silver coins in the Shaka-Kshtrapa period was 1:25, not 1:10.