If 12 + 8 = 208, 11 + 6 = 157, then 10 + 4 = ....................

What will be xy if 7862 xy is to be divisible by 125?

A person lost 10% when he sold goods at Rs.153. For how much should he sell them to gain 20%?

The ratio of 9 second to 10 hours is ............

If 2 = 1, 3 = 3, 4 = 12, 5 = 60 then 6 = .............

A father is 25 years older than his son. 10 years ago father’s age was 6 times of his son’s age. What is the present age of son?