Explanation

Each pie has 10 slices and feeds 5 people, so:

- 1 person needs 10 ÷ 5 = 2 slices.

For 200 people:

- 200 × 2 = 400 slices.

Explanation

We are solving:

(Reversed number) - (Original number) = 18

Let the original two-digit number be 10x + y  

Reversed = 10y + x

So:  

(10y + x) - (10x + y) = 18  

→ 9y - 9x = 18  

→ y - x = 2

Now we find how many two-digit numbers satisfy:  

Units digit = Tens digit + 2

Possible values for x (tens digit): 1 to 7  

Since y = x + 2 must still be a digit (i.e., ≤ 9)

Let’s list them:

- x = 1 → y = 3 → 13  

- x = 2 → y = 4 → 24  

- x = 3 → y = 5 → 35  

- x = 4 → y = 6 → 46  

- x = 5 → y = 7 → 57  

- x = 6 → y = 8 → 68  

- x = 7 → y = 9 → 79  

That's 7 total, including 13.

But your question was:  

"How many *other two-digit numbers increase by 18 when reversed?"*

So, exclude 13 itself.

Answer: 6 other numbers.  

Explanation

To find the average of 30, 40, and 50:

Step 1: Add the numbers:  

30 + 40 + 50 = 120

Step 2: Divide the sum by the number of values:  

120 ÷ 3 = 40

Explanation

Total apple = 8

More parched = 3 

8+3 = 11

Explanation

Given:

Selling Price (SP₁) = Rs. 18,700

Loss = 15%

So, Cost Price (CP) = SP1 × 100/100-15 = 18,700×100 = 22,000

To gain 15%,

Now Selling Price (SP2) = CP × 115/100 = 22,000 × 1.15 = 25,300