Rakesh lent a certain amount to Samarth for 6 years at a simple interest rate. At the end of the 6th year, Samarth paid 87 of the principal amount to Rakesh to clear the debt. The rate of simple interest per annum was:

The 'Drain of Wealth' theory was propounded by which Indian nationalist leader?

Which event is considered the turning point in Mahatma Gandhi's leadership in the Indian independence movement?

Which African leader is known for his non-violent opposition to colonial rule?