1. A boat goes 13km upstream in 39 minutes.the speed of stream is 3 km/hr.what is the speed to the boat in still water ?

23 km/hr

27 km/hr

17 km/hr

20 km/hr

2. It a,b, and c are three different positive tintergers less than 10 and greater than zero what is the greatest possible value of the [removed]a+b).

15

16

17

18

3. A survey of gulshan found an average of 32 people per houshokd and a mean of 1.2 cars per household If 48,000 people live in Gulshan, how many cars are there in Gulshan ?

18000

17000

16000

14000

4. Ratan sells a tape recorder to mizan at a loss of 10% and mizan sells it shihab at a loss 20%.If shihab pays tk 1440 for it at what price did ratan buy ?

tk 1920

tk 2000

tk 2110

tk 1800

5. Increasing the orginal price of an item by 10% then decreasing by 20% and then again increasing the price by 10% is equivalent to

4.4

orginal price

3.2

3.5

6. what is the greater of two numbers whose product is 900 if sum of these two numbers exeeds their differece by 30 ?

15

60

75

90

7. what is the absolute value of twice the difference of the roots of the equation 5y-20y+15=0 ?

0

1

2

3

8. In a mixture of 60 liters the ratio of milk and water is 2:1.what amount of water must be added to make the ratio of milk and water 1:2 ?

55 liters

60 liters

65 liters

75 liters

9. On Sunday the price of a share was tk 560.If the price of the share was tk 630 at the closing of the day what was the percent increase in the price of the share for the day ?

0.014

0.345

0.125

0.111

10. sunrise company has net working capital of tk 94,500 and a current ratio of 5:2.the amount of its current liability is tk :

63000

95500

84750

37800