Explanation

The second form of verb is always used with in a sentence of past indefinite tense.

Walk, walked, walked

Explanation

Let's denote the original two-digit number as 10a + b.

Since the product of the digits is 8:

ab = 8

Possible values for a and b are (1, 8) or (2, 4).

When 18 is added to the number, the digits are reversed:

10a + b + 18 = 10b + a

Simplify the equation:

9a - 9b = -18

a - b = -2

Now, check the possible values:

For (1, 8): 1 - 8 ≠ -2 (not valid)

For (2, 4): 2 - 4 = -2 (valid)

So, the original number is 10(2) + 4 = 24.

Explanation

Let Maryum's current age be x.

Ten years ago, Maryum's age was x - 10.

After one year, Maryum's age will be x + 1.

According to the problem, after one year, Maryum's age will be two times her age ten years ago:

x + 1 = 2(x - 10)

Now, simplify the equation:

x + 1 = 2x - 20

Add 20 to both sides:

x + 21 = 2x

Subtract x from both sides:

21 = x

So, Maryum's current age is 21.

Explanation

If A completes a work in 1 day, B completes the same work in 3 days

Hence, if the difference is 2 days, B can complete the work in 3 days

=> if the difference is 60 days, B can complete the work in 90 days

=> Amount of work B can do in 1 day= 1/90

Amount of work A can do in 1 day = 3 × (1/90) = 1/30

Amount of work A and B can together do in 1 day = 1/90 + 1/30 = 4/90 = 2/45

=> A and B together can do the work in 45/2 days = 22 ½ days

Explanation

Let's denote the daily earnings of A, B, and C as a, b, and c respectively.

We are given:

a + b + c = 150 ... (1)

a + c = 94 ... (2)

b + c = 76 ... (3)

Now, add equations (2) and (3):

(a + c) + (b + c) = 94 + 76

a + b + 2c = 170

Now, subtract equation (1) from this:

(a + b + 2c) - (a + b + c) = 170 - 150

c = 20

Explanation

Work done by P in 1 day = 1/15
Work done by Q in 1 day = 1/10
Work done by P and Q in 1 day = 1/15 + 1/10 = 1/6
Work done by P and Q in 2 days = 2 × (1/6) = 1/3
Remaining work = 1 – 1/3 = 2/3
Time taken by P to complete the remaining work 2/3 = (2/3) / (1/15) = 10 days
Total time taken = 2 + 10 = 12 days

Explanation

Let the son's present age be x years. Then, (38 - x) = x

⇒ 2x = 38.

⇒ x = 19.

∴ Son's age 5 years back (19 - 5) = 14 years.

Explanation

Explanation

Explanation

• When saving a file for the first time, the system prompts the user to provide a name and select a location.
• This helps in identifying and retrieving the file later.

Three ways to save a file:

1. Ctrl + S (Shortcut for quick saving).
2. File > Save (From the menu bar).
3. File > Save As (To rename or change the location).