Solve the following problems: Convert "twenty - three point seven five million" to figures. Calculate Michael Jackson's birth year if he died in 2009 at 50. Find the percentage of 20 pupils who love n

The number in figures is $\boxed{\text{23,750,000}}$.

Michael Jackson died in 2009 at the age of 50.

The year he was born is $\boxed{\text{1959}}$.

Total pupils = 20.
Pupils who love football (F) = 13.
Pupils who love handball (H) = 8.
Pupils who love both (F $\cap$ H) = 5.

First, find the number of pupils who love at least one sport:

Number of pupils who love neither sport:

Percentage of pupils who love neither sport:

The percentage of pupils who love neither football nor handball is $\boxed{\text{20\%}}$.

Quarter past 12noon is 12:15.
The hour hand moves $360^\circ$ in 12 hours, so $30^\circ$ per hour or $0.5^\circ$ per minute.
The minute hand moves $360^\circ$ in 60 minutes, so $6^\circ$ per minute.

Angle of the hour hand at 12:15:

Since $360^\circ$ is a full circle, this is equivalent to $7.5^\circ$ from the 12.

Angle of the minute hand at 12:15:

The angle between the hands is the absolute difference:

The angle represented is $\boxed{\text{82.5}^\circ}$.

Divide 62 by 6:

Divide 10 by 6:

Divide 1 by 6:

Reading the remainders from bottom to top, we get 142.
So, $62_{10} = 142_6$.
The hexal number is $\boxed{\text{142}}$.

Let $V$ be the total volume of the drum in liters.
Initially, the drum is $\frac{3}{4}$ full, so the volume is $\frac{3}{4}V$.
After withdrawing 60 liters, the volume is $\frac{1}{3}$ full, so the volume is $\frac{1}{3}V$.
Set up the equation:

Subtract $\frac{1}{3}V$ from both sides and add 60 to both sides:

Find a common denominator for the fractions (12):

Multiply both sides by $\frac{12}{5}$:

The drum can hold $\boxed{\text{144 liters}}$ when full.

The man sold the article for 38,400 FRS at a loss of 25%.
This means 38,400 FRS represents $100\% - 25\% = 75\%$ of the cost price (CP).

To gain 30%, the new selling price (NSP) should be $100\% + 30\% = 130\%$ of the cost price.

He was supposed to sell it for $\boxed{\text{66,560 FRS}}$ to gain 30%.

A score = 20.
Half a dozen = 6.

Half a dozen is $\boxed{\text{30\%}}$ of a score.

Johnson's mother gave birth to his junior brother in 2018.
At that time, Johnson was 9 years old.
The age difference between Johnson and his junior brother is constant and is 9 years.
If the baby is 9 years old today, Johnson is $9 + 9 = 18$ years old today.
The difference in their ages is $\boxed{\text{9 years}}$.

Number of seats = 70.
The bus had a full load, so there were 70 passengers.
Each passenger paid 7,000 FRS.

The amount raised from all the passengers was $\boxed{\text{490,000 FRS}}$.