The average age of three boys is 18 years and their age ratio is 2: 3: 4, then what is the age of the youngest boy?

Ram started a business with a sum of Rs 600. After 3 months Shyam and after 6 months Mohan also become partners. If the profit at the end of the year was divided in the ratio of 4: 5: 3, then how much was Shyam's capital more than Mohan's capital.

In how many years will Rs 2000 become Rs 2420 at 10 percent compound annual interest?

Which amount will be Rs 520 in 5 years with simple interest and Rs 568 in 7 years?

If $$ {x+{1\over x}=7}$$ then $$ {x^{2}+{1\over {x^{2}}}=?}$$

If $$ {\sqrt{2x+9}+x=13}$$ then find the value of x?

Which Greek scholar has written about India in the following first?

Which statement about the economy of Rigvedic period is false?