It takes 10 days for 4 boys to complete a piece of work. The same work can be completed by 7 girls in 10 days. If 3 boys and 5 girls work in together, approximately how many days will they need to complete the work ?

A bus travelling at a speed of 5 km/hour, takes 3 hours to complete a distance. If it takes 4 hours to complet...

A mixture contains 2/5 of element A and 3/5 of element B. When 5ml of A is added to the mixture, the proportio...

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...