Jamal needs 8 hours to do a job. Kamal takes 10 hours to do the same job. How long should it take Kamal & Jamal working together to do the job?

How many years does it take for interest Tk. 1000 to become equal to the interest to the interest on Tk. 20 in...

Asif is designing a doll house. The floor will be in the shape of a rectangle whose length is 2 feet more than...

A mixture of garbage is composed of 3 elements : by weight 1/3 of the weight is broken bottles. 3/5 of the gar...

A group of kittens went on sale and 2/3 of them were sold for Tk. 2.30 each. If none of the 36 remaining kitte...

An examiner checks 4 scripts in 5/3 hours. How many scripts can he check in 50 minutes?

Farhana earns Tk. 5.00 for every hour she works in a book store . Last week she worked for x hours. She purcha...