From 1/2 part of Rs. 150, how much is to be taken away so that only Rs. 30 is left.

How much is 8% of Rs. 25

The angle of elevation of the top of an unfinished tower at a distance of 120 m from its base is 30^(@) . How much higher must the tower be raised so that the angle of elevation of its top at the same point may be 60^(@) ?

Express 5/8 part of Rs. 2 in rupees and paise.

Deepu Rabeya and Megha started a small business with capital Rs. 6500, Rs. 5200 and Rs. 9100 respectively and got a profit of Rs. 14400 after 1 year. They have taken 2/3rd of that profit distributing equally within themselves and the rest of the profit according to the ratio of their capital. Find th parts of profits of each of them.

Bijoy borrowed Rs. 64000 from a bank. If the rate of interest per annum be 2.5 paisa per Rs. 1, then how much compound interest should Bijoy have to pay to the bank after 3 years?

The taxi fare is Rs. 3.50 for 1 km or less from start and Rs. 1.50 per km or any fraction thereof, for additional distance. If the fare be Rs. Y for a distance of x km, express y as a function of x.

If the simple interest of a certain sum of money for 1 year is Rs. 50 and compound interest for 2 years is Rs. 102, then find the sum of money and the rate of interest.

I have Rs. 150. With 0.3 part of my money I bought exercise books and with 0.4 part I bought a story book. Let me find, what amount of money is left with me.

A shop keeper bougth rice of Rs. 30 at a rate of Rs. 1.5 per kg and of Rs. 30 at a rate of Rs. 4 per kg. Then what is the value of mixed rice per kg ?