A person wants to buy 3 paise and 5 paise stamps costing
exactly one rupee. If he buys which of the following number
of stamps. he wont able to buy 3 paise stamps
City A population is 68000, decreasing at a rate of 80 per
year City B having population 42000 increasing at a rate of
120 per Year. In how many years both the cities will have
same population
Perimeter of the back wheel = 9 feet, front wheel = 7 feet
on a certain distance the front wheel gets 10 revolutions
more than back wheel . what is the distance?