There are tow examinations rooms A and B. If 10 students are sent from A to B, then the number of students in each room is the same . If 20 candidates are sent from B to A, then the number of students in a is double the number of students in B. what is the number of students in room A?

The area of a field is 680 square feet . If the cost of fencing is Tk 50 per foot , then how much will it cost...

Eight people are planning to share equally the cost of a rental car . If one person withdraws from the arrange...

A two -digit number is such that the product of the digits is 8. when 18 is added to the number , then the dig...

The present ages of three persons are in the ratio of 4: 7:9 Eight years ago, the sum of their ages was 56. wh...

A circular logo is enlarged to fit the lid of a jar. The new diameter is 50 percent larger than the original....

A water tank can be filled by two pipes A and B in 60 minutes and 40 minutes respectively. How many minutes wi...