৩৮১১
If takes 6 men 4 days to dig a hole 3 feet deep. How long it will take 10 men to dig a hole 7 feet deep?
উত্তর
5.6 days
৩৮১২
A floor is covered by 800 tiles measuring 10 cm square. How many square tiles of side 8 cm would be needed to cover the same floor?
উত্তর
1250
৩৮১৩
The sides of two cubes differ by 2 cm and their volumes differ by 152 cm³. What is the length of the side of the smaller one?
উত্তর
4 cm
৩৮১৪
The foot of a ladder is 2 m away from a vertical wall. The height of the top of the ladder is 12 m less than the length of the ladder. What is the length of the ladder?
উত্তর
4. 25 m
৩৮১৫
What is the area of a square picture whose border is 5 cm wide and 4/9 of the total area?
উত্তর
Try your self
৩৮১৬
Farid earns Tk 18/h as a gardener for a 30 hour week. His overtime rate is x/h. for a 36 hour week he earns TK. 660. The value of x is
উত্তর
20
৩৮১৭
A stone ball is dropped into a barrel of water and sinks to the bottom. The ball is completely covered by water.By how much does the water rise in the barrel?
উত্তর
Try your self
৩৮১৮
The sum of the squares of two consecutive integers is 145. The sum of the positive integers is
উত্তর
17
৩৮১৯
Nina was 1.25 m tall. One year later she was 10% taller and in the nest year height increased a further 12% from her new height.What is her height after both increases?
উত্তর
1.54 m
৩৮২০
The foot of a ladder is 2 on away from a vertical wall. The height of the top of the ladder is 12m less than the length of the ladder. What is the length of the ladder?
উত্তর
4.25 m