১৬৭২২
By selling a bicycle for Tk. 2,850 a shopkeeper gains 14%. If the profit is reduced to 8%, then the selling price will be
উত্তর
Tk. 2,700
১৬৭২৩
Naizel is twenty years older than Neketa. In three years Naizel will be twice as old as Neketa will be. How old is Neketa now?
উত্তর
17
১৬৭২৪
In recent survey of the students of a public university, it is found that 65% students are good in Mathematics and 45% students are good in Statistics. How many students are good in both Mathematics and Statistics of the public university?
উত্তর
10%
১৬৭২৫
A wall 8 m long, 6 m high and 22.5 cm thick is made up of bricks, each measuring 25 cm × 11.25 cm × 6 cm. The number of bricks required is
উত্তর
6,400
১৬৭২৬
The length of a rectangle is increased by 25%. By what percentage should the width be decreased so that the area of the rectangle remains unchanged?
উত্তর
20%
১৬৭২৭
The average age of 12 children is 15 years. If another child comes the average age comes to 13. What is the age of the new child?
উত্তর
11 years
১৬৭২৮
A train 150 meter long and running at a speed of 60 km per hour takes 30 seconds to cross a bridge. What is the length of the bridge?
উত্তর
350 meter