A manufacturer of jam wants to make a profit of Tk. 0.65 each to make first 100 jars of jams and Tk. 0.55 to make each jar after the first 100. How much profit he will make from 300 jars of jam?

A digital 12 hour clock falls behind 10 minutes each day. How many days will it take to reach a point where th...

If the average of four numbers K, 2k+3, 3k-5, and 5k+1 is 63. What is the value of k?

On a shipping trip, Karim spent 1/3 of his money for a jacket and another Tk. 5 for a hat. If he still had 1/2...

What is the rate of discount if a product costing Tk 500 is sold for Tk. 470?

If 16(4a)=1, find the value of a :

In a certain country, a person born in every 7seconds and a person dies every 13 seconds. Therefore the birth...