Explanation

You are now facing in the South direction

Explanation

To find the cost of the doll when it is sold for Rs. 220 with a profit rate of 10%, we can use the following formula:

$\text{Selling Price}=\text{Cost Price}+\text{Profit}$

Given that the profit is 10% of the cost price, we can express the profit as:

$\text{Profit}=0.10\times \text{Cost Price}$

Let the cost price be $C$. Therefore, the selling price can be expressed as:

$\text{Selling Price}=C+0.10C=1.10C$

We know the selling price is Rs. 220, so we can set up the equation:

$1.10C=220$

Now, we can solve for $C$:

$C=\frac{220}{1.10}=200$

Thus, the cost of the doll was Rs. 200.

Explanation

The perimeter is the total sum of all sides of a closed figure or surface.

It typically used for shapes like polygons (e.g., squares, triangles).

Explanation

To find the total number of tiles required, we need to convert the floor dimensions from feet to inches and then divide the total area by the area of a single tile.

Floor dimensions:

5 feet = 5 x 12 = 60 inches (length)

4 feet = 4 x 12 = 48 inches (width)

Total area = length x width = 60 x 48 = 2880 square inches

Tile dimension:

10 square inches

Now, divide the total area by the tile area:

2880 ÷ 10 = 288

So, 288 tiles of dimension 10 square inches are required to cover the floor.

Explanation

Explanation

To find the value of X, substitute Y = 5 into the equation Y = 3X + 12:

5 = 3X + 12

Subtract 12 from both sides:

-7 = 3X

Divide both sides by 3:

-7/3 = X

So, the value of X is -7/3!

Explanation

To calculate the loss, we subtract the selling price from the buying price:

Loss = Buying Price - Selling Price

Loss = Rs. 60 - Rs. 40

Loss = Rs. 20

Explanation

First, find the speed of the train past the telegraph post:

Speed = Distance / Time = (Length of train) / 8 seconds

Since the length of the train is not given, let's call it "x". Then, Speed = x / 8

Now, find the speed of the train past the bridge:

Speed = Distance / Time = (Length of train + Length of bridge) / 20 seconds

= (x + 264) / 20

Since the speed of the train is the same in both cases, set up an equation:

x / 8 = (x + 264) / 20

Cross-multiply and solve for x:

20x = 8x + 2112

12x = 2112

x = 176

So, the length of the train is 176 meters.

Now, find the speed of the train:

Speed = x / 8 = 176 / 8 = 22 meters/second

Convert the speed to km/hr:

Speed = 22 m/s x (3600 s/h) / (1000 m/km) = 79.2 km/hr

The correct answer is:

79.2 km/hr

Explanation

Let P, Q and R represent their respective monthly incomes. Then, we have:

P + Q = (5050 x 2) = 10100 .... (i)

Q + R = (6250 x 2) = 12500 .... (ii)

P + R = (5200 x 2) = 10400 .... (iii)

Adding (i), (ii) and (iii), we get: 2(P + Q + R) = 33000 or P + Q + R = 16500 .... (iv)

Subtracting (ii) from (iv), we get P = 4000

Therefore P's monthly income = Rs. 4000

Explanation

3/7 mile = 10 min. 10/3 = 3.334 min = 1/7 mile. 3.334 x 7 = 23.334 min, = 1 mile 23.334 min. - 10 min. = 13.334 min. or 13 1/3 min. 60 sec./3 = 20 sec. 

It will take 13 minutes and 20 seconds to walk the rest of the mile.