Solution:

Mixing business with pleasure.(PbLuEsAiSnUeRsEs)

Solution:

28 is the required number.

28 * 3 - 2 = 82.

Solution:

22 + 2 = 24

Solution:

181

Explanation:
+11 =>16
+33 =>49
+55 =>104
+77 =>181

Solution:

The first step will be to cut the three tablets in equal halves and then put each half in two piles. Now, each of the two piles contains half of pill A and two halves of pill B (or one pill B). Now, take out one pill A from the bottle and cut it into half. Put the two halves in two piles.

In this way, each pile now contains two halves of pill A and two halves of pill B or 1 pill A and 1 pill B. You can now take 1 pile one day and the second pile on the next day.

Solution:

16

Explanation:
Let the number be p, then the square will be p^2
According to question:
2p = (p/4) + 7
=> 8p = p + 28
=> p = 4

p^2 = 4^2 = 16.

Solution:

80,000.

Explanation:
The distance traveled by each tyre:
4/5 * 1, 00, 000km = 80,000 km.

Solution:

She has misplaced 119 pens in total.

Solution:

father:72, Son:27

Explanation:
The only single digit prime numbers are 2, 3, 5 and 7.
Let us use the possible combinations and check when the difference comes to be 45.
Son = 23, Father = 32, Difference = 7
Son = 25, Father = 52, Difference = 27
Son = 27, Father = 72, Difference = 45

This stand apt for the requirements. Thus the present age of the father is 72 years and that of son is 27 years.

Solution:

L, A and E are the missing letters which forms the word EVALUATE when read clockwise.