How many kilogram of sugar costing TK. 9 per kg must be mixed with 27 kg of sugar costing TK. 7 per kg so that there may be a again of 10% by selling the mixture at TK. 9.24 per kg?

If each side of a rectangle is increased by 20%, then by what percent the area will be increased?

If 299414.5=172, then 29.941.45=?

In one hour, a boat goes 11 km/hr along the stream and 5 km/ hr against the stream. What is the speed of the b...

3 pumsps, working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 pumps work to empty t...

In a cricket match, a batsman scored 80 runs which included 3 boundaries and 8 sixes . What percent of his tot...

Two tailors X and Y are paid a total of TK. 550 per week by their employer. If X is paid 120 percent of the am...