Identify the hidden meaning behind this picture?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

In Greek mythology, the Sphinx sat outside of Thebes and asked this riddle of all travellers who passed by. If the traveller failed to solve the riddle, then the Sphinx killed him/her. And if the traveller answered the riddle correctly, then the Sphinx would destroy herself. The riddle:

What goes on four legs in the morning, on two legs at noon, and on three legs in the evening?

Oedipus solved the riddle, and the Sphinx destroyed herself.

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

What is the word or phrase?

A new clothing store has a unique method of pricing items. A vest costs $20, a tie costs $15, a blouse costs $30, and underwear costs $45. How much would pants cost?

What you cannot hold but it is yours?

I am thinking of a five-digit number such that:
The first and last digits are the same, their submission is an even number and multiplication is an odd number and is equal to the fourth number. Subtract five from it and we obtain the second number. Then divide into exact halves and we get the 3rd number.

What number I am thinking of?

How can you take 2 from 5 and leave 4?

An office is divided into 8 cubicles. How many of the cubicles are painted if only 1/8 of the cubicles are painted?