The value of which one of the following fractions falls in between $$ {3\over 5}$$ and $$ {7\over 8}$$?

In a trapezium ABCD, AB and DC are parallel to each other with a perpendicular distance of 8 m between them. Also, (AD)=(BC)=10 m, and (AB) = 15 m <(DC). What is the perimeter (in m) of the trapezium ABCD?

If a regular polygon has 5 sides then the measure of its interior angle is greater than the measure of its exterior angle by how many degrees? 

An amount doubles itself in 5 years with simple interest. What is the rate of interest per year?

By selling an article for Rs. 700 a man lost 30 %. At what price should he have sold it to gain 30%? 

If the population of a town is 64000 and its annual increase is 10%, then its population at the end of 3 yeas will be :

A man can swim at the rate of 3 km/hr. in still water. Then, if speed of the stream is 2 km/hr., then in what time he will cover a total distance of 5 km in with the stream and against the stream?

The printed price of a TV set is ₹14,500. It is sold for ₹10,000 with two consecutive discounts. If the first discount is 10%, then what is the second discount?