A mixture contains 2/5 of element A and 3/5 of element B. When 5ml of A is added to the mixture, the proportion of B in the mixture changes to 1/5. What amount of A was originally present in the mixture before the addition was made ?

The breadth of a rectangular field is 5m. Its length is thrice the breadth. What is the total length of facing...

Annie can complete a term paper in 15 days while Bob can finish it in 20 days. What is the fraction of work le...

To make a high quality fertilizer, a seller mixes 26 kg of type A fertilizer at Tk 20 per kg with 30 kg of typ...

One 100 gram bowl of cream soup contains 300 calories. How many calories are there in a 30 gram portion of tha...

"X" is the minimum number of mangoes that must be added to an existing stock of 966 mangoes. So that the total...

In a cricket championship tournament, Team Dhaka has won 30 games out of 50 played. It has 45 more games to pl...