1. The average height of girls in a class is 5 ft. and that of boys is 5.7 ft. If the average height of the students in class is 5.5ft, what could be the possible strength of boys and girls respectively in the class.|Janata Bank|Rupali Bank|Officer (General)-2019

50, 20

30,20

20,30

60,50

2. A boy goes to school at a speed of 5km/h and returns to the village at a speed 4 km/h. If the takes 4 hours and 30 minutes in all, what is the distance between the village and the school?|Janata Bank|Rupali Bank|Officer (General)-2019

7km

10 km

4 km

5 km

3. A Bond gets matured in 10 years. Ram invested Tk.4200 in this bond and received Tk.105000 the matured. If the bond was under simple interest, then what was the rate of interest per annum?|Janata Bank|Rupali Bank|Officer (General)-2019

10%

12.5%

15%

7.5%

4. If x=2 then the value of x3+27x2+243x+631 is__|Janata Bank|Rupali Bank|Officer (General)-2019

1211

1231

1321

1233

5. If 22x+1=1/8x+3 then the value of x is__|Janata Bank|Rupali Bank|Officer (General)-2019

3

2

0

-2

6. A ladder is placed against a wall such that its foot is at a distance of 2.5m form the wall and its top reaches a windows 6 m above the ground. Find the length of the ladder.|Janata Bank|Rupali Bank|Officer (General)-2019

6.5m

8.5m

4.5m

2.5m

7. A seller marks his goods 30

15%

9%

10.5%

8.5%

8. If the ratio of simple interest and principal is 8:25/2 and rate of interest is equal to the time invested then find the time of investment?|Janata Bank|Rupali Bank|Officer (General)-2019

12 years

8 years

10 years

16 years

9. 12 students working for 5 hours a day can solve a certain number of problems in 8 days. How many students are needed to solve five time the original number of problems, if they work at 4 day for 14 days?|Janata Bank|Rupali Bank|Officer (General)-2019

90

45

95

40

10. There is a group of 5 men, 6 women and 8 children. 1 man, 1 woman and one child are going to be selected to play a game. In how many ways can the selection be done?|Janata Bank|Rupali Bank|Officer (General)-2019

240 ways

480 ways

120 ways

None of these