A boy was asked to multply a number by 7/8 instead he divided the number by 7/8 and got the result 15/14 more than what he should have got if he had multiplied the number by 7/8. The number is ---

The average age of a group of 10 students is 15 years . when 5 more students joined the group , the average ag...

3 men or 5 women or 8 boys can finish a work in 38 days. How many days will be required to complete the same w...

If the perimeter of a rectangular garden plot is 34 feet and its area is 60 square feet, what is the length of...

A candidate scoring 25% marks in an examination fails by 30 marks while another candidate who score 50% marks...

A man sold his watch at a loss of 5% . Had he sold it for Tk. 56.25 more he would have gained 10% . what was t...

A dishonest trader mixes 2 kg of vegetable ghee costing Tk. 45 a kg with 3 kg of standard ghee costing Tk. 70...