Explanation

Pipe A and pipe B can fill the tank in 3 hours and 5 hours, then total work = LCM of (3, 5) = 15 unit

Efficiency of pipe A = 15/3 = 5 unit and efficiency of pipe B = 15/5 = 3 unit

From 7 to 8 AM, pipe A alone done 5 unit, work remains (15 - 5) = 10 unit,

Now, pipe A and B together can do it in = 10/(5 + 3) = 10/8 hours = 10/8 × 60 = 75 min

 The required time is 8 AM + 75 min = 9 AM + 15 min = 9 : 15 AM

∴ The correct answer is 9 : 15 AM

Explanation

Let's calculate the total cost of placing an advertisement containing 22 words:

Fixed cost = $3.50

Variable cost = 22 words x $0.25 per word = $5.50

Total cost = Fixed cost + Variable cost = $3.50 + $5.50 = $9.00

So, the total cost of placing an advertisement containing 22 words is $9.00.

Explanation

Explanation

Explanation

Explanation

(0.7) ^? + 3 = (0.49 x 0.343/0.2401)^4

(0.7)^? + 3 = (0.7)^4

On comparing the exponents both sides, we get

? + 3 = 4

∴ ? = 4 - 3 = 1

Explanation

The Drag-and-Drop command is used to move selected text to another part of a document.

This method allows you to reposition text by dragging it to a new location.

Explanation

To determine the total amount charged by the internet service provider, we need to consider both the one-time setup fee and the monthly service fee for each customer.

1. The one-time setup fee is $100 per customer, so for c customers, the total setup fee is $100c$.
2. The monthly service fee is $50 per customer. For m months, the total service fee per customer is $50m$. Thus, for c customers, the total service fee is 50cm.

Now, we can combine these two components to get the total charge:

$$text{Total Amount} = text{Setup Fee} + text{Service Fee} = 100c + 50cm$$