50% of a number is 116. What is 25% of that number?

2/6 of be by to 2/6 is to 24/72 ?

Geologists know that potassium-40 decays to argon-40, with a half-life of 1.3 billion years. if an analysis of a feldspar crystal in a sample of granite shows that 75 percent of the potassium-40 atoms have decayed to form argon-40, what is the age of the granite

India's population is made up of percent hindus.