A number is decreased by 10% and then increased by 10% . The number so obtained is 10 less than the original number. what was the original number ?
In a fraction , if numerator is increased by 40% and denominator is increased by 80% then what fraction of the original is the new fraction ?
In an examination , 34% of the students failed in Mathematics and 42% failed in English . If 20% of the students failed in both the subjects , then the percentage of students who passed in both the subjects was:
A sum invested at 5% simple interest per annum grows to Tk. 504 in 4 years The same amount at 10% simple interest per annum in 212 years will grow to :
A person borrows Tk. 5000 for 2 years at 4% p.a. simple interest . He immediately lends to another person at 614% p.a. for 2 years .Find his gain in the transaction per year .
A contractor employed 30 men to do a piece of work in 38 days. After 25 days , he employed 5 men more and the work was finished one day earlier. How many days he would have been behind, if he had not employed additional men?
A garrison of 500 men had provisions for 27 days . After 3 days a reinforcement of 300 men arrived . For how many more days will the remaining food last now?
If 8 men can reap 80 hectares in 24 days , then how many hectares can 36 men reap in 30 days ?
A man completes 45 of a job in 10 days . At this rate, how many more days will it take him to finish the job?
If the radius of a circle is increased by 6% , then the area is increased by :
If the height of a triangle is decreased by 40% and its base is increased by 40% , what will be the effect on its area?
A tank is 25 m long , 12 m wide and 6 m deep. The cost of plastering its walls and bottom at 75 paise per sq.m is :
The diagonal of a square is 42 cm. The diagonal of another square whose area is double that of the first square , is:
10% loss on selling price is what percent loss on the cost price ?
At what profit percent must an article be sold so that by selling at half that price , there may be a loss of 30% ?
The sale price of an article including the sales tax is TK. 616 . The rate of sales tax 10% If the shopkeeper has made a profit of 12% , then the cost price of the article is :
An aeroplane covers a certain distance at a speed of 240 kmph in 5 hours . To cover the same distance in 123 hours , it must travel at a speed of :
300 kmph
360 kmph
600 kmph
720 kmph
A clock is started at noon . By 10 minutes past 5, the hour hand has turned through:
In a city , 40% of the people are illiterate and 60% are poor. Among the rich , 10% are illiterate. What percentage of the poor population is illiterate?
The cost price of 20 articles is the same as the selling price of x articles . If the profit is 25% , then the value of x is :