The average of 7 consecutive number is 20. The largest of these numbers is :
If one-third of one-fourth of a number is 15, then three-tenth of that number is :
The sum of two positive integers multiplied by the bigger number is 204, and their difference multiplied by the smaller number is 35. The numbers are :
A is two years older than B who is twice as old as C. If the total of the ages of A, B and C be 27, Then how old is B?
If 35% of a number is 12 less than 50% of that number, then the number is :
If selling price is doubled, The profit triples. Find the profit percent.
The ratio of three numbers is 3 : 4 : 5 and the sum of their squares is 1250. The sum of the numbers is :
X and Y invested in a business. They earned some profit which they divided in the ratio of 2 : 3. If X invested Tk. 40,000 the amount invested by Y is :
If 5 men and 9 women can do a piece of work in 19 days, then in how many days will 3 men and 6 women do the same work?
A person travels form P to Q at a speed of 40 kmph and returns by increasing his speed by 50%. What is the average speed for both the trips?
A train 360 m long is running at a speed of 45 km/hour. In what time will it pass a bridge 140 m long?
The speed of a boat in still water is 10 km/hr. If it can travel 26 km downstream and 14 km upstream in the same time, the speed of the stream is :
A sum of money amounts to Tk. 9800 after 5 years and Tk. 12005 after 8 years at the same rate of simple interest per annual is :
At what rate of compound interest rate per annual will a sum of Tk. 1200 become Tk. 1348.32 in 2 years?
In a 500m race, the ratio of the speeds of two contestants A and B is 3 : 4. A has s start of 140 m. Then, A wins by :
The angle between the minute hand and the hour hand of a clock when the times 4.20?
The market value of a 10.5% stock, in which an income of Tk. 756 is dervided by investing Tk.900, brokerage being 1/4%, is :
In how many ways can the letters of the word 'LEADER' be arranged?
When the numerator of a frction increases by 4, the fraction increases by 2/3. The denominator of the fraction is :
A student multiplied a number by 3/5 instead of 5/3. What is the percentage of error in the calculation?
A certain amount is distributed among A, B and C. A gets 310 and B14 of the whole amount . If C gets Tk. 81 then B gets:
A, B and C can complete a piece of work in 24, 6 and 12 days respectively . Working together , They will complete the same work in:
A pump can fill with water in 2 hours. Because of a leak, it took 213 hours to fill the bank . The leak can drain all water of the tank in:
The least number of 4 digits which is a perfect square, is :
The area of a rectangle is 460 square meters. If the length is 15% more than the breadth, what is the breadth of the rectangular field?