ans: The amount of sum is Tk. 800 & the interest is 13%.
In 312 years, the amount will be = 1,164 Tk.
1n 2 years, the amount will be = 1,008 Tk.
In 112 years, the amount will be = 156 Tk.
In 1 year the amount will be = 15632 Tk.
In 2 years, the amount will be = 156×232 = 208 TK
The principal is = 1,008 – 208 = 800 Tk.
The interest of Tk. 800 in 2 years is = 208 Tk.
The interest of Tk. 1 in 1 year is = 208800×2 TK
The interest of Tk. 100 in 1 year is = 208×100800×2 = 13 TK
The dimensions of the room is Length= 9m, Breadth= 6m, height= 6m
Let the dimension of the room
Breadth =x meter, Length = x+ x2 meter and Height = h meter
The carpet area = Area of the floor = Length x Breadth = x x 3x2
Rate for carpeting = Tk. 5 per sq.m
Thus, total carpeting area of the room= ( total cost of carpetingrate)= 2705 sq m = 54 sq m
Now, the area of the room,
=> x x 3x2 = 3x22 =54
=> x = 6
So, Length = 32x6 = 9 m
Similarly, papered am will be = total expensecost =172010 = 172
Given, Area of one door and 2 windows = 8 sq m
Total area of 4 walls = Papered Area + Doors and Windows
=172+8=1805qm.
Now, Total area of 4 walls = 180m
2 (length + breadth) x Height = 180m
=>2(9 +6) x h= 180m
h = 6m
Ratio ofshares ofA, B, C, D= (24 x 3) : (10 x 5) : (35 x 4) : (21 x 3) = 72:50: 140163.
The sum oftheir ratio=72+50+140+63 =325 Tk.
Agrazed=24×3 =72
Bgrazed=10×5=50
C grazed= 35×4 = 140
D grazed= 21×3 = 63
Total number of cows is = 72 + 50 + 140 + 63 = 325
A’s share of rent for ‘72 cows is = 720 Tk.
A’s share rent for 1 cow is = 72072 Tk.
Total share of rent for 325 cows is = 720$×$72 = 3250Tk.
